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September 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: 42,766

physics
A 1.8 kg object is pulled along the floor with a force of 7.0 N acting horizontally. If the object accelerates at 2.4m/s^2, how much kinetic friction is acting? how do i do this? could you please explain step by step
December 3, 2009 by kerri

physics
A man pushes a packing case of total mass 40kg across a floor at a constant speed of 0.5m/s by exerting a horizontal force of 100N what is the resultant force on the case how big was the force of friction acting on the case how much work was done in 3s what is the Ek into what...
April 11, 2013 by gngraqn

PHYSICS
Example 2: a) A desk has a mass of 68.75 kilograms. If the coefficient of static friction between the desk and the floor is 1.1, what force must be used to move the desk from rest? b) Once the desk above is in motion, what force must be used to keep it moving at a constant ...
March 14, 2013 by Anonymous

Physics
Consider the stability of a ladder of mass m and length L leaning against a wall. A painter wants to be sure the ladder will not slip across the floor. He knows that the frictional force exerted by the floor on the bottom end of the ladder is needed to keep the ladder in ...
May 8, 2013 by R

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˛
April 1, 2014 by Tracelle

Science
A car weighing 15,000N rounds a curve of 60m at an angle of 30 degrees. Find the friction force acting on the tires when the car is travelling at 100kph. The coefficient of friction between tires and the road is 0.90
August 18, 2014 by Marck

Physics (Mechanics)
A 10-kg crate on a ramp is inclined at 30 degrees from the horizontal and released. The coefficients of friction between them are .48 (coefficient of static friction) and .28 (coefficient of kinetic friction). a) Does the block slide? b) What then is the actual friction force...
September 30, 2012 by Anonymous

Physics
A box of mass 250 kg slides 4.6 m down an inclined plane of 31°. Jim pushes against the box to keep it from accelerating. The coefficient of kinetic friction between the box and the ramp is 0.41 (a) Calculate the magnitude of the force exerted by Jim. (b) Calculate the work ...
March 8, 2012 by Sarah

physics
To move a large crate across a rough floor, you push on it with a force F at an angle of 21°, below the horizontal, as shown in the figure. Find the acceleration of the crate, given that the mass of the crate is m = 38 kg, the applied force is 329 N and the coefficient of ...
October 14, 2011 by anonymous

Physics
To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 36 kg and the coefficient of static friction ...
October 27, 2012 by Gia

physics
hello, i have this question. Calculate the average force of friction acting on a wooden block as it propelled along the floor? i have done the following solution first of all i don't know what average force of friction means? i found the Fapplied by strecthing the elastic 50 ...
June 5, 2007 by daniel

Physics
Search: The figure shows three crates being pushed over a concrete floor by a horizontal force of F magnitude 440 N. The masses of the crates are m1 = 30.0 kg, m2 = 10.0 kg, and m3 = 20.0 kg. The coefficient of kinetic friction between the floor and each of the crates ...
March 20, 2011 by Sarah

Physics to drwl please help
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a) What is the ...
February 16, 2012 by John

physics
The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be?
September 29, 2010 by jerr ******

Physics
To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 29 kg and the coefficient of static friction ...
October 27, 2012 by HELP PLEASE

physics
A 1,080-N crate is being pushed across a level floor at a constant speed by a force of 290 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? (b) If the 290-N force is ...
October 2, 2012 by monic

physics
when an object is rotating in a circle and the only force is acting on it is friction how is force of friction vector pointing towards the circle because an object in circular motion is traveling in that direction, it's accelerating towards the center of the circle, but ...
October 12, 2009 by Physics

physics
The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be? ____ m/s2
September 29, 2010 by Anonymous

physics
under the influence of its drive force, snowmobile is moving at constant velocity along a horizontal patch of snow. When drive force is shut off, snowmobile coasts to a halt. a) During the coasting phase, what is the net external force acting on the snowmobile b) How does work...
February 12, 2012 by Sushmitha

Physics please help its urgent i need help
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a) What is the ...
February 16, 2012 by John

physics
A block slides down a rough plane. The plane makes an angle of 60 degrees with the horizontal, the weight of the block is 5.0N and the coefficient of kinetic (dynamic) friction between the block and the plane is 0.30. 1) determine the magnitude of the frictional force acting ...
October 4, 2006 by blacksheep

physics
A box of weight 2N accelerates down a rough plane that is inclined at an angle 30 degrees above the horizontal. The normal force acting on the box has a magnitude 1.7 N, the coefficient of kinetic friction between the box and the plane is O.30, and displacement of the box is 1...
November 30, 2009 by Ashley

Physics
A 1200-N crate is being pushed across a level floor at a constant speed by a force of 260 N at an angle of 20.0° below the horizontal. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 260 N force is instead pulling the block at an ...
September 18, 2011 by Elaine Jetton

physics
a force F pushes on a box of mass m that initially is at rest on a rough, horizontal surface. the force F is directed at an angle theta = 30 degreees above the horizontal. the coefficants of friction between the plane and the box are static= .30 and kinetic = .28. if F=50N and...
February 17, 2012 by Matt

11th grade
If the coefficient of kinetic friction between a 30 kg crate and the floor is 0.35, what horizontal force is required to move the crate at a steady speed across teh floor? wHAT HORIZONTAL FORCE IS REQUIRED IF MUK IS ZERO?
January 19, 2010 by Alyssa

Physics
If the coefficient of kinetic friction between a 35 kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? What horizontal force is required if μk is zero?
December 4, 2012 by Henry

Physics ASAP
A block of weight 20 N is pushed with a force of 30 N through a horizontal distance of 5 m using a stick which is at an angle of 37° from the horizontal as shown. The coefficient of kinetic friction µk between the table and the block is 0.25. For your own reference, draw a ...
December 10, 2012 by Sierra

physics
The 850 kg piano is being pushed across the floor with an applied force of 283 N [forward] and a force of friction of 271 N [backwards]. If the normal force balances the force of gravity, draw a free body diagram for the piano.
October 13, 2013 by iyzi

physics
A desk weighing 80 N rests on the floor. The coefficient of friction between the floor and the desk is 0.25. What is the frictional force between yhe desk and the surface of the floor?
December 1, 2011 by maria

college physics
you find that it takes a horizontal force of 160 newtons to slide a box along the surface of a level floor at constant speed . the coefficient of static friction is 0.52, and the coefficient of kinetic friction is 0.47. if you place the box on a dolly of mass 5.3 kg and with ...
August 14, 2010 by oslec

physics
If the coefficient of kinetic friction between a 37 kg crate and the floor is 0.31, what horizontal force is required to move the crate at a steady speed across the floor? What horizontal force is required if µk is zero?
November 14, 2010 by Hannah

physics
if the coefficient of kinetic friction between a 35-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? what horizontal force is required uk is zero?
July 30, 2011 by mariz

physics
A rope is used to pull a 2.54 kg block at constant speed 4.48 m along a horizontal floor. The force on the block from the rope is 5.87 N and directed 29.8° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the block-...
November 2, 2011 by Keelia

Physics
A rope is used to pull a 5.19 kg block at constant speed 3.38 m along a horizontal floor. The force on the block from the rope is 3.23 N and directed 20.0° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the block-...
March 10, 2014 by Riley

physics
1. A snowmobile, with a mass of 530 kg, applied a force of 410 N backwards on the snow. a. What force is responsible for the snowmobile’s resulting forward motion? (Hint: Think action–reaction force pairs.) b. If the force of friction on the snowmobile is 187 N backwards, what...
October 23, 2013 by iyzi

Physics
A snowmobile, with a mass of 530 kg, applied a force of 410 N backwards on the snow. a) What force is responsible for the snowmobile’s resulting forward motion? (Hint: Think action–reaction force pairs.) b) If the force of friction on the snowmobile is 187 N backwards, what is...
March 28, 2014 by Dan

Physics
A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of Kinetic friction between the box and the floor?
October 13, 2010 by Kelsey

college physics
A rope is used to pull a 3.57 kg block at constant speed 5.10 m along a horizontal floor. The force on the block from the rope is 6.82 N and is directed 15° above the horizontal. (a)What is the work done by the rope's force? (b) What is the increase in the thermal energy of ...
March 7, 2010 by help!

ap physics
A 1.20*10^2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.350. What should be the magnitude of P, so that the net work done by it and the kinetic frictional force is ...
October 19, 2010 by Anonymous

physics
A 1.20*10^2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.350. What should be the magnitude of P, so that the net work done by it and the kinetic frictional force is ...
October 19, 2010 by peter

Biomechanics
A 10 kg block sits motionless on a table in spite of an applied horizontal force of 2 N. What are the magnitudes of the reaction force and friction force acting on the block?
April 18, 2013 by Jami

Physics
A 10-kg wooden box rests on a ramp that is lying flat. The coefficient of static friction is 0.50, and the coefficient of kinetic friction is 0.30. What is the friction force between the box and ramp if no force horizontal force is applied to the box? a 20 N horizontal force ...
October 5, 2010 by Anonymous

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 ...
June 22, 2011 by Tina

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?
October 31, 2009 by Anonymous

physics
Mary applies a force of 77 N to push a box with an acceleration of 0.45 m/s2. When she increases the pushing force to 82 N, the box's acceleration changes to 0.74 m/s2. There is a constant friction force present between the floor and the box. (a) What is the mass of the box?
October 15, 2013 by Anonymous

Physics-forces
1. Harry is pushing a car down a level road at 2.0m/s with a force of 243N. The total force acting on the car in the opposite direction, including road friction and air resistance, is which of the following? a) slightly more than 243N b) exactly equal to 243N c) slightly less ...
January 6, 2014 by Jessie

PHYSICS
The drawing shows a large cube (mass = 34 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.3 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The ...
June 4, 2007 by MJ

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...
February 23, 2011 by heather

Physical Science
A donkey pulls a cart(c) with a mass of 240kg, attached to a log of wood(w), with a mass of 80kg on a horizontal road. W is tied to the back of c by means of non elastic rope. The donkey applies a foce of 170N on Cart c and the system accelerates at 0,3m s-2 to the left. The ...
March 15, 2007 by Taryn

Physics
A 1.60 102-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What should be the magnitude of , so that the net work done by it and the kinetic frictional force is zero?
November 17, 2012 by Anonymous

Physics
A light spring having a force constat of 125 N/m is used to pull a 9.50kg sled on a horizontal frixtionless ice rink. If the sled has an acceleration of 2.00 m/s^2, by how much does the spring stretch if it pulls on the sled (a) horizontally, (b) at 30.0 degrees above the ...
June 15, 2009 by Sarah

Physics
A lower block is being pulled to the right across a wooden table and it is 5kg and the block on top of it weighs 2 Kg. The friction between the table and the lower block is reduces the total acceleration to be 1.5 m/s2. Friction keeps the upper block attached to the lower one...
February 21, 2011 by Paige

Physics
A box rests on the back of a truck. The coefficient of static friction between box and bed of the truck is 0.255. (a) When the truck accelerates forward, what force accelerates the box? A)the inertial force B)gravity C)centripetal force D)the friction force (b) Find the ...
March 8, 2012 by Cynthia

physics
2.) A horizontal force of 100 N is required to push a piece of furnisher across a floor at a constant velocity. (a.) What is the net force acting on the furniture?
August 18, 2010 by Anonymous

physics
If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of kinetic friction? What is the coefficient of static friction between the box and the floor? If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of...
September 30, 2010 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...
October 17, 2010 by courtney

Biophysics
a person is standing with there feet 0.1m apart and length from shoulders to feet(pivot point) is 1.5m what is the minimal coefficient of static friction required so that the frictional force is at least 1.5 x as large as the external force toppling the person? according to my...
September 25, 2011 by nully

physics
A 1,440-N crate is being pushed across a level floor at a constant speed by a force vector F of 380 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? μk = Correct...
October 12, 2012 by Uzy

preap physics
A 15.4kg block is dragged over a rough horizontal surface by a constant force 191N acting at an angle of 25.3 degrees above the horizontal. The block is displaced 80.4m and the coefficient of kinetic friction is. 2 A) find the magnitude of the work done by the force of ...
January 11, 2012 by jay

Physics-Please check if I did this correctly
I posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the speed of ride is ...
December 7, 2010 by Joey

Physics - Friction
**Especially part a) A person, sunbathing on a warm day, is lying horizontally on the deck of a boat. Her mass is 54.6 kg, and the coefficient of static friction between the deck and her is 0.683. Assume that she is moving horizontally, and that the static frictional force is ...
September 27, 2013 by Kir

Physics
Marissa drags a 15 kg duffel bag 18 m across the gym floor. If the coefficient of kinetic friction between the floor and bag is 0.15, how much thermal energy does Marissa create? It says I'm look for deltaE_Th. I dont know what that means or how to figure out the problem.
August 8, 2011 by falcon306

Physics
What are the forces acting on an elevator as it moves from rest upward and stops at its floor. Discuss the forces including tension force (on cable or string), gravitational force, and net force when an elevator is at rest. Which law does this support? Which force can you ...
October 29, 2010 by Margaret Yeager

physics
A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
October 19, 2011 by carlton

physics
A 100 kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal. There is a coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface that the ...
May 14, 2010 by Steven

Physics
Measuring coefficients of friction. A coin is placed near one edge of a book lying on a table, and that edge of the book is lifted until the coin just slips down the incline. The angle of the incline Theta C, called the critical angle, is measured. (a) Draw a free body diagram...
September 27, 2009 by Mandy

physics
The force sensor measures the force on the sensor due to the bumper, but the cart's momentum change arises from the force on the cart due to the bumper. Which of the following facts are needed to assert that the magnitude of these two forces are nearly equal at all times. A. ...
July 2, 2008 by Elisa

Physics
A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the four forces that act ...
October 13, 2008 by Brandon

Science
If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity?
October 2, 2011 by Audrey

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 ...
June 13, 2012 by Mike

Physics help
A car travels in a circle whose radius is 31 m, with a speed of 19 m/s. (1) What is the magnitude of the car's acceleration? _____ m/s2 (2) What is the nature (origin) of the horizontal force on the car? (What is exerting the force?) The force causing the car to turn is: ...
October 28, 2012 by arcos15

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 ...
December 5, 2006 by Anonymous

Physics
A 4.0 kg block is stacked on top of a 12.0 kg block, whcih is accelerating along a horizontal table at a = 5.2 s^-2 m. Let Mu k = Mu s = Mu. (a) What mininum coefficent of friction Mu between the two blocks will prevent the 4.0 kg block from sliding off? (b) If Mu is only half...
August 20, 2009 by QUESTION

Physics
a packing ccrate slides down an incline ramp at constant velocity. Thus we can deduce that a) a frictional force is acting on it b) a net downward force is acting on it c) it may be accelerating d) it is not acted on by appreciable gravitational force with a constant velocity ...
October 10, 2007 by Tammy

physics
I am trying to study for my exam i have tomorrow and this type of problem keeps giving me trouble can someone please help me:: A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle theta=23.0degrees above the ...
January 30, 2012 by Amanda

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?
December 18, 2011 by t.a.

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 ...
February 24, 2013 by Meder

math
Three forces act on a hockey pick as it slides across the ice; the normal force N represents the force the ice exerts upward on the puck and is given by N= <0,0,100>, the gravitational force G represents the downward force of gravity on the puck and is given by G = <0...
May 6, 2013 by Ryan

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...
December 16, 2007 by Jane

physics
The weightless strut in the figure below is not attached to the wall; it is prevented from falling only by friction. (Let w = 360 N, L = 5.25 m and h = 3.25 m.) (a) Find the magnitude of the force of friction between the wall and the strut. (b) Find the normal force exerted by...
June 12, 2014 by Anonymous

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 ...
December 17, 2009 by adam

Science
For science class, we had to do a lab that involved parachuting eggs off a third floor window of our school. This lab would help us learn the forces of gravity, friction, and air resistence. We were supposed to construct a parachute that would make our egg land safely. After ...
January 23, 2011 by Danielle

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.
October 19, 2009 by Bob

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 ...
October 7, 2013 by carlo

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
November 10, 2011 by Courtney

Physics-forces
1. a force of 250N is used to push a heavy box down the street. If the force of friction between the box and the street is 195N and the box has a mass of 60kg, what is the accleration of the box? 2.a force of 40N is applied to a 6kg box of books. If the frictional force acting...
January 5, 2014 by Jessie

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?
December 4, 2011 by Connor

Physics
I have 3 different questions. 1) Calculate the coefficient of kinetic friction if it takes a force of 64 Newtons to keep a 54 kilogram box of books sliding across any icy surface at a uniform speed. 2) A car weighing 14,000 Newtons rests on a 20.0 degree incline. Calculate the...
October 6, 2010 by Dorothy

Physics (simple stuff)
. Does the force of friction depend on the area of the sliding surface? What is larger, static friction or sliding friction when an object is stationary? Why sand is placed on icy streets and sidewalks? )something to do with friction) how could you reduce sliding friction
March 31, 2009 by drago

Physics
A 15 N wooden block is dragged for 15 meters across a wooden floor in 15 seconds... I'm given that the mew (the greek leter uk) or however u say it is .2 I have to make a free body diagram I sloved and got Fn = 15 N mg = -15 N Ff = -3 N How do I solve for the force applied to ...
March 18, 2009 by Physics

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 ...
March 15, 2011 by Bill

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?
January 4, 2012 by Mackenzie

physics
A block is pushed 2 m along a fixed horizontal surface by a horizontal force of 10 N. The opposing force of friction is 0.4 N (a)How much work is done by the 10 N force? (b)what is the work done by the friction force
November 13, 2010 by kwaku

physics
A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
October 17, 2011 by carlton

physics
What is the minimum downward force on the box ( m=30 kg)that will keep it from slipping? The coefficients of static and kinetic friction between the box and the floor are 0.40 and 0.30, respectively.One person is pulling the box forward with a force of 125 N.
December 7, 2010 by vinu

Physics
Rather than taking the stairs, Javier gets from the second floor of his house to the first floor by sliding down the banister that is inclined at an angle of 30.0 degrees to the horizontal. If Javier has a mass of 49.1 kg and the coefficient of kinetic friction between Javier ...
December 11, 2012 by Asia

PHYSICS (what is a dynamic equation????)
A car of mass Mc is connected to mass m2 by a string. The string passes over a solid cylindrical pulley, which has a frictionless bearing, of radius R and mass M. when the system is released from rest the string doesn't slip, the car moves down the incline, and m2 moves upward...
December 3, 2007 by ~christina~

Physics
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of 50N. The person on the left has a mass of 45kg. The coefficient of kinetic friction between the box and the floor is .2, the coefficient of static ...
November 25, 2012 by Tim

Physics
Two people push on a box that has a mass of 10kg, the person on the right has a mass of 86kg and applies a horizontal force of 50N. The person on the left has a mass of 45kg. The coefficient of kinetic friction between the box and the floor is .2, the coefficient of static ...
November 25, 2012 by Tim

physics
A 3.0 kg block is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 30° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25.(a) Calculate the magnitude of the frictional force on the block from the ...
October 2, 2010 by Alejandra

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