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April 19, 2014

Search: friction The friction force between the bag and the floor is 15 N. What is the net force acting on the bag? What is the acceleration of the bag?

Number of results: 56,073

Physics
The net force down the ramp is (mass) x (acceleration) = 75*3.60 = 270 N The component of weight down the ramp is M g sin 25 = 310.6 M The friction force is the difference between those two numbers, 40.6 N The kinetic friction coefficient is (friction force)/(normal weight ...
Thursday, November 12, 2009 at 10:23pm by drwls

Physics
A worker applies a constant force of magnitude F = 339 N on a crate in a direction = 26.1o above the horizontal as he pulls it across a level floor through a distance of s = 7.20 m. The mass of the crate is m = 53 kg and the coefficient of kinetic friction between the floor ...
Tuesday, December 18, 2012 at 7:03pm by Sara H

Physics
A block of mass m is being dragged across the floor by a force F. The coefficient of friction between the block and floor is u. Show that if the block is being accelerated by the force F from rest for a time t, the speed of the block at time t can be found from: Vf= (F/m - ug)t
Thursday, November 10, 2011 at 10:07pm by Courtney

Physics
Starting from rest, a 11.50 kg suitcase slides 3.18 m down a frictionless ramp inclined at 40 from the floor. The suitcase then slides an additional 5.22 m along the floor before coming to a stop. (a) Determine the suitcase's speed at the bottom of the ramp. (b) Determine the...
Sunday, October 14, 2012 at 12:40pm by Angela

Physics question
A boy intend to move an mkg crate across the floor by applying a constant force p newton on it.the coeficient of friction between the floor and crate is .which of these is the best option for his task?
Friday, February 8, 2013 at 11:05am by Physics

PHYSICS
downward? that means he is increasing friction. Friction force=mu(mg+Force*Sin31) horizontal force=force*cos31 set them equal, solve for force.
Thursday, October 11, 2012 at 11:35am by bobpursley

physics
You push a large 32 kg crate across the floor with a force F=330 N at an angle of 21 degrees below the horizontal. If the coefficient of kinetic friction between the crate and the floor is 0.45, what is the acceleration of the crate?
Tuesday, September 21, 2010 at 10:38pm by Ka

physics
Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor.the floor of friction force of 24N.show that the box accelerates is 4m/s
Tuesday, April 1, 2014 at 9:22pm by Tracelle

Physics
Two blocks of masses 40.0kg and 20.0kg are stacked on a table with the heavier block on top. The coefficient of static friction is 0.600 between the top and bottom blocks and 0.300 between the bottom block and the table. What is the required magnitude of a horizontal force ...
Tuesday, October 31, 2006 at 11:21am by Eric

physics
A 70.0 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.760 and 0.610, respectively. What is the minimum normal force he ...
Monday, October 26, 2009 at 8:51pm by christine

Physics
That is a very high coefficient of friction. Are you sure it is 3 and not 0.3? If it is 3, it won't move. The downward force on the floor is Fn = M g + 60 sin 30 = 128 N The friction force is Ff = * Fn The acceleration is (60 cos 60 - Ff)/M
Monday, April 7, 2008 at 6:41pm by drwls

physics
Let Ff = Force of Friction Let C = Coefficient of Friction Let N = Normal force Ff = CN The required force to just get a block moving along at a constant velocity will also be equal to the force of friction (Ff) if there is nothing else acting on the horizontal plane. N can be...
Monday, January 17, 2011 at 1:44pm by EssKay

physics
The friction force is M*g*Uk IF the desk is moving. Uk is the kinetic friction coefficent in this case. The problem should have told you if the desk is moving, and whether the coefficient of friction is static or kinetic. If the desk is not moving, the applied force equals the...
Thursday, December 1, 2011 at 9:46am by drwls

Physics
To move a crate across a rough floor, you pull on it at an angle of 21 degrees above the horizontal. How much force is needed if the mass of the crate is 32kg and the coefficient of static friction between the crate and floor is 0.57
Tuesday, March 6, 2012 at 12:42pm by Corey

Physics
A 800 N crate is being pulled across a level floor by a force F of 320 N at an angle of 29 above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate.
Sunday, October 2, 2011 at 4:47pm by Bridge

science
How fast a car decelerates depends upon how strong a force is applied to the brakes, unless the tires skid. If that happens, the friction force is proportional to the weight, so the deceleration rate is (Friction force/mass) which is independent of weight. This assumes the ...
Saturday, May 17, 2008 at 2:19am by drwls

Physics
Wt = mg = 20 kg * 9.8 N/kg = 196 N. = Weight of table. Ft = 196 N. @ 0 Deg. = Force of table. Fp = 196*sin(0) = 0 = Force parallel to floor. Fv = 196*cos(0) = 196 N. = Force perpendicular to the floor. Fn = Fap-Fp-Fk = ma = 0, a = 0. 71-0-Fk = 0, Fk = 71 N. = Force of kinetic ...
Wednesday, January 4, 2012 at 3:07pm by Henry

physics
2. A horizontal force of 100 N is required to push a piece of furniture across a floor at a constant velocity. (a) What is the net force acting on the furniture? (b) How much is the friction force that acts on the sliding furniture? (c) How much friction acts on the ...
Tuesday, August 10, 2010 at 2:11pm by Anonymous

Physics
A 13.0 kg box is released on a 33 degree incline and accelerates down the incline at 0.20 m/s^2. 1. Find the friction force impeding its notion? 2. What is the coefficient of kinetic friction? *Are we dealing with Kinetic or Static Friction...this will effect coefficient ...
Wednesday, June 13, 2012 at 10:51am by Mike

physics
(Maximum Friction force)/(Normal force) The maximum friction force is the value above which slipping occurs. The normal force is the force between and perpendicular to the contact surface. For an object sliding on a horizontal flat surface, it equals the weight of the object
Friday, February 25, 2011 at 5:44am by drwls

physics
A horizontal force of 100 N is required to push a piece of furniture across a floor at a constant velocity. what is the net force acting on the furniture? How much is the friction force that acts on the sliding furniture? How much friction acts on the furniture when it is at ...
Tuesday, September 21, 2010 at 6:20pm by m

physics
A 50.0-kg box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. You observe that at one instant the box is sliding to the right at 1.5 m/s and that it stops in 2.5 s with uniform acceleration. What magnitude force does friction ...
Thursday, February 14, 2013 at 4:34pm by joe

Physics
A 20 kg table initially at rest on a horizontal floor requires a 136 N horizontal force to set it in motion. Once the table is in motion, a 71 N horizontal force keeps it moving at a constant velocity. What is the coefficient of kinetic friction between the table and floor?
Wednesday, January 4, 2012 at 3:07pm by Mackenzie

Physics
My experiment setup was like this: i48.tinypic. com/14n31pl.jpg FYI, there is sandpaper between the ruler and the wall. I calculated the coefficient of friction to be 0.468. Is that correct? A second question asks that as the hanging weight is moved closer to the wall, what ...
Friday, November 30, 2012 at 3:37am by Jeras

Physics
1.A 24 kg crate initially at rest on a horizon floor requires a 75 N horizontal force to set it in motion, once the crate is in motion, a horizontal force 53 N keeps the crate moving with a constant velocity. Find the coefficient of kinetic friction, between the floor and crate.
Monday, October 19, 2009 at 6:58pm by Bob

Physics
The 60 kg climber in Fig. 4-52 is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.82 and 0.58, respectively. What is the minimum normal...
Tuesday, October 13, 2009 at 5:12pm by Anonymous

Physics
The 60 kg climber in Fig. 4-52 is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.82 and 0.58, respectively. What is the minimum normal...
Tuesday, October 13, 2009 at 6:35pm by Anonymous

physics
Starting from rest, a 10.7 kg block slides 2.60 m down to the bottom of a frictionless ramp inclined 30.0 from the floor. The block then slides an additional 4.70 m along the floor before coming to a stop. (a) Determine the speed of the block at the bottom of the ramp. m/s (b...
Tuesday, March 26, 2013 at 7:12pm by Rob

Physics
10. You try to move a couch across the floor but it doesn't move. What is the other force acting on the couch? A. only you B. inertia C. static friction (my answer) D. kinetic friction 11. You finally get the couch in Problem 10 to move. What other force is acting on the couch...
Thursday, April 9, 2009 at 2:42pm by Jasmine

physics
once a 21 kg crate is in motion on a hoizontal floor, a horizontal force of 58 N keeps the crate moving with a constant velocity. the acceleration of gravity is 9.81 m/s^2. what is mu k , the coefficient of kinetic friction, between the crate and the floor?
Thursday, November 11, 2010 at 10:40pm by autumn

physics
You pull a 18 kg sled across the floor with a strap that is at an angle of 40 above the horizontal with a force 86 N. Find the magnitude of the acceleration of the sled, given that the coefficient of kinetic friction between the sled and the floor is 0.23.
Saturday, September 22, 2012 at 5:00pm by christina

Physics
A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35 above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate in m/s^2
Sunday, January 13, 2013 at 8:55pm by Alyssa Thompson

Physics
A dock worker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 64 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 46 N is required to keep it moving with a constant ...
Tuesday, March 15, 2011 at 8:07pm by Bill

Physics
A file cabinet weighing 1500 N is at rest on the floor. The coefficient of static friction between the floor and the cabinet is 0.5. What is the minimum force required to make the file cabinet move horizontally
Friday, November 9, 2012 at 5:41pm by Joey

Physics
A file cabinet weighing 1500 N is at rest on the floor. The coefficient of static friction between the floor and the cabinet is 0.5. What is the minimum force required to make the file cabinet move horizontally
Saturday, November 10, 2012 at 12:54pm by John

cleveland
A 28 kg chair intially at rest on a horizontal floor requires a 360 N horizontal force to set it in motion. Once the chair is in motion, a 329 N horizontail force keeps moving it at a constant velocity. The acceleration of gravity is 9.81 m/s^2. What is the coefficient of ...
Thursday, December 17, 2009 at 11:53pm by adam

Physics
A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.77 m long and weighs 472 N. At a certain instant the worker holds the beam momentarily at rest with one end a distance d = 1.44 m above the floor, as shown in...
Wednesday, December 29, 2010 at 8:22pm by Sarah

physics
A 1,440-N crate is being pushed across a level floor at a constant speed by a force of 210 N at an angle of 20.0 below the horizontal, as shown in the figure (a) below (a) What is the coefficient of kinetic friction between the crate and the floor
Wednesday, September 28, 2011 at 8:39pm by Sam

Physics
5) You are pushing a 55 kg refrigerator along at a constant speed of 1.5 m/s using an applied force of 250 N when the floor type changes from tile to carpet. The carpet has a coefficient of static friction of 0.62 and a coefficient of kinetic friction of 0.54. Are you pushing ...
Saturday, October 31, 2009 at 3:32pm by Anonymous

Physics
No, that is not right. You can't multiply a force (100 N) by a dimensionless number (0.4) and end up with degrees. You need to write a moment balance equation for for the ladder an angle of tilt that causes the friction force on the floor to equal the maximum static friction, ...
Sunday, November 11, 2007 at 1:46am by drwls

Physics
Equate the work done against friction to the loss of kinetic energy. This will let you solve for the friction force. Divide that by the weight of the car to get the cefficient of sliding friction.
Wednesday, September 19, 2007 at 5:42pm by drwls

Physics
A large crate filled with physics laboratory equipment must be moved up an incline onto a truck. 1. The crate is at rest on the incline. What can you say about the force of friction acting on the crate? a. The friction force point up the include b. The friction force point ...
Monday, September 22, 2008 at 4:34pm by Nicole

physics
A 14.0-kg chair is at rest on a flat floor. The coefficient of static friction between the chair and the floor is 0.450. A person tries to move the chair by pushing on the chair with a force directed at an angle of 30a below the horizontal. What is the minimum force that the ...
Sunday, December 2, 2012 at 4:36pm by mike

physics
A 14.0-kg chair is at rest on a flat floor. The coefficient of static friction between the chair and the floor is 0.450. A person tries to move the chair by pushing on the chair with a force directed at an angle of 30a below the horizontal. What is the minimum force that the ...
Sunday, December 2, 2012 at 4:36pm by mike

Physics
How come a heavy truck and a small car can both travel safely at the same speed around an icy, banked-curve road? I would think that since mass is increased, normal force is therefore increased, and force of friction is therefore increased. And since the opposing force, the ...
Tuesday, October 19, 2010 at 10:15pm by Hannah

physics
A 29 kg chair initially at rest on a horizontal floor requires a 375 N horizontal force to set it in motion. Once the chair is in motion, a 345 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s2 . a) What is the coefficient of ...
Thursday, November 17, 2011 at 5:16pm by hope

Physics
a 96 kg clock initially at rest on a horizontal floor requires a 605 N horizontal force to set it in motion. After the clock is in motion a horizontal force of 547 N keeps it moving with a constant velocity. the acceleration of gravity is 9.81 m/s2 find the static friction ...
Thursday, October 11, 2012 at 8:09pm by Susan

Physics
A 3.4 kg block is pushed along a horizontal floor by a force of magnitude 21 N at a downward angle θ = 40. The coefficient of kinetic friction between the block and the floor is 0.26. What the magnitude of the block's acceleration?
Sunday, October 23, 2011 at 9:06pm by Tom

physic
The figure shows a block P on top of another block Q. The two blocks are connected by a string which passes over a fixed smooth pulley. The mass of P is 0.20 kg and the mass of Q is 0.50 kg. The coefficient of static friction between blocks P and Q is 0.5 and between Q and the...
Wednesday, August 8, 2012 at 11:18pm by Anonymous

Physics2
Forward applied force = F cos 30 = 5.196 N Friction force on m1 = (m1*g+Fsin30)*0.25 = 5.65 N Friction force on m2 = (m2*g*0.25) = 2.45 N Acceleration of m1 and m2: a = (5.65+2.45)/(m1 + m2) = 2.7 m/s^2 The force between the blocks, F', minus friction on m2, is what ...
Friday, December 9, 2011 at 9:59am by drwls

physics
There are a couple of ways to do this. Netforce= ma 200N+friction=ma -200N + ma=friction solve for friction force. Work done on by friction=forcefricion(10m) Now notice
Tuesday, February 3, 2009 at 6:51pm by bobpursley

physics
Suppose the radius of the room is 3.97 m and the speed of the wall is 12.0 m/s when the floor falls away. The source of the centripetal force on the riders is the normal force provided by the wall. (a) How much centripetal force acts on a 56.0 kg rider? (b) What is the minimum...
Wednesday, February 23, 2011 at 7:11pm by heather

Science
A box that is initially at rest is pushed by a person at an angle 0 with a force F until it reaches a speed of v. The coefficient of kinetic friction between the box and the surface is U. Is this: work done by person equal to magnitude of friction F work done by person greater...
Wednesday, March 6, 2013 at 12:45am by Anya

Physics
I understand that friction WOULD equal to the horizontal pulling force IF the object is moving at constant velocity, but the question asked about friction force when there is acceleration. Are you saying that whether or not there is acceleration, the friction force would ...
Friday, May 15, 2009 at 12:02pm by Angela

Physics
What force would you have to exert on a 326-N trunk up a 19.0 inclined plane so that it would slide down the plane with a constant velocity? What would be the direction of the force? (The coefficient of friction between the plane and the trunk is 0.328.) The force of friction...
Sunday, December 16, 2007 at 9:04am by Jane

physics mechanical energy
A skateboarder with mass ms = 42 kg is standing at the top of a ramp which is hy = 3.7 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is vf = 6.3 m/s. Write an expression for the work, Wf, done ...
Monday, October 7, 2013 at 11:39pm by carlo

physics
At the airport, you pull a 18 kg suitcase across the floor with a strap that is at an angle of 41 above the horizontal. Find the normal force and the tension in the strap, given that the suitcase moves with constant speed and that the coefficient of kinetic friction between ...
Tuesday, October 18, 2011 at 5:13pm by Jessica

Physics
A 10 kg block is pushed across a rough surface by a 25N force the block moves at a constant velocity when this force is applied. A) determine the magnitude of the friction force acting on the block B) What is the coefficient of friction between the surface and the block
Monday, July 18, 2011 at 12:51am by Edward

physics
A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 45 with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.)
Thursday, November 18, 2010 at 6:05pm by maya

physics
to move a crate across a rough floor ,you push on it at an angle of 21degrees below the horizontal. find the force necessary to star the crate moving ,given that the mass of the crate is32kg and the coefficient of static friction between the crate and the floor is o.57.
Sunday, February 5, 2012 at 7:26am by shadad

physics
A 4.170 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is μs = 0.505 and the coefficient of kinetic friction is μk = 0.255. At time t = 0, a force F = 12.7 N is applied horizontally to the block. State the ...
Thursday, October 25, 2012 at 10:29pm by ashley

Physics
Since the kinetic energy does not change, Friction work = (Friction force)*(sliding distance) = Potential energy loss M g*3.0 m = Ff*7.0 m Ff = (3/7) M g = 105 J is the friction force that resists motion.
Tuesday, November 22, 2011 at 11:51pm by drwls

Physics
A 55 kg ice skater, initially at rest on a flat skating rink, requires a 198 N horizontal force to be set in motion. However, after the skater is in motion, a horizontal force of 175 N keeps her moving at a constant velocity. Find the coefficients of static and kinetic ...
Tuesday, December 5, 2006 at 11:28pm by Anonymous

physics
A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35 above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate. answer in m/s2 if possible. Thanks
Saturday, January 12, 2013 at 9:02pm by Lauren Miller

Physics
This is a lot like your previous problem. There is a force 10.4 cos 27.5 or 9.22 N horizontal from the cord. There is a force 10.4 sin 27.5 or 4.80 N up from the cord The force the block exerts down on the floor is the weight - the pull up from the cord m g - 4.80 N = 5.70(9.8...
Tuesday, December 4, 2007 at 9:43pm by Damon

physics
Let's pretend the Qs are actual numbers. So an unstretched, mass less spring constant Q3 N/m and length Q10 meters is attached between a wall and a mass of Q5 kg. The coefficient of both static and kinetic friction between the mass and the table is Q13. A constant force F is ...
Wednesday, December 2, 2009 at 10:12pm by autumn

Physics
A 40kg block is pushed along a level surface with a 200 N force at an angle of 35 degrees below the horizon. The coefficient of kinetic friction between the block and the surface is 0.15. What is the normal force acting on the block? What is the force of friction? What is the ...
Sunday, February 5, 2012 at 1:02pm by Krystal

physics
The coefficient of static friction is 0.604 between two blocks. The coefficient of kinetic friction between the lower block and the floor is 0.115. Force F causes both blocks to cross a distance of 3.93 m, starting from rest. What is the least amount of time in which the ...
Sunday, September 27, 2009 at 3:11pm by Anonymous


A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 17 N at an angle θ = 35 with the horizontal (Figure 6-20). The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the ...
Wednesday, July 14, 2010 at 3:56pm by Sam

Physics
(friction force) x (distance of skid) = Kinetic energy loss Use that equation to get the friction force, f. The coefficient of kinetic friction, Uk, can be obtained from Uk = f/(M*g)
Friday, April 17, 2009 at 12:39am by drwls

Physics
A 6.40 kg block rests on a 12.5 kg block as shown in the diagram. The interface between the lower mass and the table is frictionless, but there is friction (static friction μS and kinetic friction μK) between the two blocks. A horizontal force F r acts on the UPPER ...
Sunday, February 24, 2013 at 12:12pm by Meder

simple physics problem
A crate sliding down a ramp reaches the bottom of the ramp and slides across a flat floor. At the instant shown, the crate has a speed of v= 8.90 m/s. The crate comes to a stop after a distance x= 13.0m . What is the coefficient of kinetic friction between the crate and the ...
Sunday, August 29, 2010 at 11:14pm by Anonymous

science
friction between tires and the road and air drag and friction in the wheel bearings stopped her. Friction turns kinetic energy into heat.
Tuesday, February 4, 2014 at 3:29pm by Damon

physics
A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 17 N at an angle θ = 35 with the horizontal (Figure 6-20). The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the ...
Wednesday, July 14, 2010 at 3:56pm by Sam

physics
the coefficient of starting friction for wood on wood is 0.55. What is the force of friction of a wood block of mass 3.5 kg being pulled on a wood floor? i think i use the formula F=mMA where F is the force needed to move a solid from rest, m=coefficient of friction, M=mass of...
Sunday, October 17, 2010 at 4:16pm by courtney

physcis
a flight attendant pulls her 70 kg flight bag in an airport terminal holding the handle 50 degrees above the horizontal. she pulls the bag a distance of 200 m while exerting a 40 n force acting along the handle with a constant speed how much work does the flight attendant ...
Saturday, October 20, 2012 at 9:31pm by chad

Physics
The equation of motion for a solid sphere rolling uphill is M*g sinbeta-(2/5)M*a = M*a The second term on the right is the friction force, assuming no slipping. Rearranging gives you a = g*sinbeta/1.4 To prevent slipping, the friction force (2/5)M*a = (2/5)M*g*sinbeta*(5/7...
Tuesday, April 3, 2012 at 6:34pm by drwls

PHYSICS
A block with a mass of 126 kg is pulled with a horizontal force of F applied across a rough floor. The coefficent of friction between the floor and the block is 0.7. If the block is moving at a constant velocity, what is the magnitude of F applied? F applied =
Sunday, February 23, 2014 at 7:16pm by cris

Physics
i don't see how to apply Newtons second law to the top block there's a force pointing left the force of static friction is there a force opposing this force pointin in the right direction? How do I find the mininum coefficent of friction
Thursday, August 20, 2009 at 4:33pm by QUESTION

Physics
A 6.00 kg crate is pushed by a 300.0 N force at and angle of 30 degrees with the horizontal. a.What coefficient of friction value is experienced by the crate if it moves at constant velocity? b. What coefficient of friction value is present if the crate accelerates at 1.50m/s2...
Tuesday, September 12, 2006 at 6:59am by fluffy

Physics
The trick t this problem is to realize that the suitcase iss ON THE VERGE OF slipping. The static coefficient of friction detremines the maximum possible friction force wthout slipping. The actual force can be much less. Based upon the observation that the suitcase slipped ...
Monday, March 3, 2008 at 2:08pm by drwls

Re: Physics/Math
A 3.0 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 18 N at an angle = 45 with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.) Calculate the...
Saturday, February 10, 2007 at 10:14pm by COFFEE

physics
If the furniture is constant velocity, there is no accelerating force (net force), so 100N equals friction force. If the furniture is at rest, there is no horizontal force. friction is an odd force, it only occurs when something is trying to move it.
Tuesday, September 21, 2010 at 6:20pm by bobpursley

physic
to move a large crate across a rough floor, you push down on it at an angle of 21 degree. find the force necessary to start the crate moving, given mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.57
Sunday, November 7, 2010 at 6:40pm by sid

science
The acceleration is negative since the surface is horizontal and friction is the only horizontal force acting. Compute the friction force from F = m a That gives F = 0.73 Newtons There is another way to compute the friction force, and it gives a different result. F = (kinetic ...
Tuesday, November 24, 2009 at 10:33am by drwls

Science (Help, please!)
"Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction force (between the car and the floor). What UNBALANCED forces are acting on the car? "Toy Car B" is propelled by air resistance. The other forces ...
Thursday, December 19, 2013 at 10:17am by Alexandra

physics
a man applies a force of 220 N horizontally to the right against a 50 kg crate. the force of friction between the crate and the floor is 200 N. if the crate is pushed 2.0 m, the work done is.... What formula would be applicable?
Sunday, December 4, 2011 at 9:56pm by Connor

physics
How can I find kinetic friction (Fk) without mu? I know the normal force which is 201N. The mass of the object is 30kg. This is the full questions of it helps. I just don't understand how to find kinetic friction 1. If a 30kg object experiences a normal force of 210N when ...
Wednesday, June 22, 2011 at 8:32pm by Tina

physics
A horizontal force of magnitude 33.5 N pushes a block of mass 3.80 kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600. (a) How much work is done by that applied force on the block-floor system?
Sunday, December 18, 2011 at 9:09pm by t.a.

Physics
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force?
Wednesday, October 12, 2011 at 5:27pm by Dee

Physics
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force
Thursday, October 13, 2011 at 1:40pm by Dee

Physics
Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force ...
Monday, October 18, 2010 at 5:03pm by Lisa

Physics
Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force...
Monday, October 18, 2010 at 10:22pm by Lisa

physics
The exerted force along the floor direction is 44.8 cos 64.2 = 19.5 N That equals the bag's weight times the kinetic friction coefficient, Uk, since there is no acceleration. 19.5 = 78.6 Uk Solve for Uk
Sunday, March 1, 2009 at 9:40pm by drwls

Physics
4) A 1200 kg car is accelerating at 1.6 m/s2. If the coefficient of friction of friction is 0.15, what is the force applied to the car by the engine? here do you use the equation kinetic friction= μk(normal force) and put in 1.6 m/s^2=.15(Fn) is this how you go about it?
Saturday, October 31, 2009 at 3:31pm by Anonymous

physics
A box of books weighing 280 N is shoved across the floor of an apartment by a force of 390 N exerted downward at an angle of 35.1 below the horizontal. If the coefficient of kinetic friction between box and floor is 0.57, how long does it take to move the box 4.00 m, starting...
Tuesday, October 13, 2009 at 3:43am by luc

physcis
A box of books weighing 330 N is shoved across the floor of an apartment by a force of 440 N exerted downward at an angle of 35.0 below the horizontal. If the coefficient of kinetic friction between box and floor is 0.57, how long does it take to move the box 4.00 m, starting...
Thursday, September 23, 2010 at 2:49pm by Anonymous

Physics
A box of books weighing 290 N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.0 below the horizontal. If the coefficient of kinetic friction between box and floor is 0.57, how long does it take to move the box 3.80 m, starting...
Sunday, October 2, 2011 at 9:53pm by Seth

physics
A box of books weighing 350 N is shoved across the floor of an apartment by a force of 460 N exerted downward at an angle of 35.0 below the horizontal. If the coefficient of kinetic friction between box and floor is 0.57, how long does it take to move the box 3.80 m, starting...
Sunday, February 24, 2013 at 10:03pm by elana

physics
A box of books weighing 350 N is shoved across the floor of an apartment by a force of 460 N exerted downward at an angle of 35.0 below the horizontal. If the coefficient of kinetic friction between box and floor is 0.57, how long does it take to move the box 3.80 m, starting...
Sunday, February 24, 2013 at 10:03pm by elana

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