Friday
April 18, 2014

Search: coefficient of kinetic friction

Number of results: 13,304

physics
if the weight of the block,W,is 2.5 kilogram,the coefficient of static friction,0.25,and the coefficient of kinetic friction,0.15,determine: (a) the force necessary to hold the block sliding down (b) the force necessary to pull the block up the plane with uniform speed
Wednesday, March 6, 2013 at 9:21am by helpppp meeeeeeee PHYSICS.........................

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
Calculate the friction force Ff = m*a The coefficient of kinetic friction is Uk = Ff/(m*g) = a/g = ___ You don't need to know the mass.
Thursday, October 6, 2011 at 12:26am by drwls

Physics
Friction work = initial kinetic energy M*g*mu*X = (1/2)M*V^2 M cancels out. Solve for mu, the coefficient of friction
Saturday, November 17, 2012 at 8:54pm by drwls

physics
F1 = force to start movement μs = coefficient of static friction F2 = force to maintain movement μk = coefficient of kinetic friction m = mass The coefficients of friction are defined as follows: F1 = μs*mg F2 = μk*mg
Thursday, September 30, 2010 at 10:52pm by MathMate

PHYSICS
A 4 kg block is pushed along the ceiling with a constant applied force of 85 N that acts at an angle of 55 degrees with the horizontal. The block accelerates to the right at 6 m/s^2. determine the coefficient of kinetic friction between the block and the ceiling. The applied ...
Saturday, February 24, 2007 at 11:56pm by Christy

Physics
The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block start moving, what is ...
Wednesday, January 26, 2011 at 9:37pm by Sarah

Physics
A force of 40 N is applied at an angle of 30oabove the horizon to a 5 kg block that is at rest on a rough horizontal surface. After the block starts to move with an acceleration of 3 m/s2, what is the coefficient of kinetic friction between the block and the horizontal surface...
Thursday, May 14, 2009 at 11:44pm by Angela

11 grade physics
A force of 23.0 N is required to start a 3.0 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? 1 (b) If the 23.0 N force continues, the box accelerates at 0.50 m/s2. What is the coefficient of ...
Sunday, November 14, 2010 at 3:41pm by Cameron

physics
A block of mass m slides down an incline of mass M. As shown, th acceleration of the block is a. The coefficient of kinetic friction between the block and the incline is ė1, while the coefficient of kinetic friction between the incline and ground is ė2. If the incline stays ...
Tuesday, January 22, 2013 at 5:27am by Calista

physics
Since there is no acceleration, the rope tension (5.3 N) equals the friction force, which is M g Uk Solve for Uk, the kinetic friction coefficient
Saturday, February 14, 2009 at 12:42am by drwls

physics
Use the numbers in the first statement to compute the coefficient of kinetic friction. In the second part, set the momentum of the bullet equal to the impulse given in the opposite dorection by friction.
Tuesday, December 7, 2010 at 5:27pm by drwls

physics
box full of books rests on a wooden floor. The normal force the floor exerts on the box is 235 N. a) You push horizontally on the box with a force of 121 N, but it refuses to budge. What can you say about the coefficient of static friction between the box and the floor? (b) ...
Thursday, February 17, 2011 at 10:28am by mayrel

Physics
A force of 23.0 N is required to start a 3.1 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? (b) If the 23.0 N force continues, the box accelerates at 0.50 m/s2. What is the coefficient of kinetic ...
Thursday, October 30, 2008 at 8:51am by Grant

physics
The horizontal component of the tension in the rope, T cos 19.3, will equal the friction force, since the sledge is not accelerating. Compute the friction force using the kinetic friction coefficient, making sure that you take into account the vertical component of the rope ...
Sunday, March 20, 2011 at 10:36pm by drwls

Physics
2.5 N = (weight) x (kinetic friction coefficient) Solve for the kinetic friction coefficient. In part 2, the total weight being pushed increased by a factor 4.6/2.5 = 1.84 The total weight being pushed must therefore have increased by the same factor, to 12.5 N. The added ...
Saturday, January 8, 2011 at 11:29pm by drwls

Physics
A box, with a weight of mg = 25 N, is placed at the top of a ramp and released from rest. The ramp measures 4.40 meters horizontally and 3.50 meters vertically. The box accelerates down the incline, attaining a kinetic energy at the bottom of the ramp of 54.0 J. There is a ...
Sunday, October 30, 2011 at 4:02pm by Jeanne

physics
In figure p4.36, m1 = 10kg and m2 = 4.0kg. the coefficient of static friction between m1 and the horizontal surface is 0.50, and the coefficient of kinetic friction is 0.30. (a) if the system is released from rest, what will its acceleration be? (b) if the system is set in ...
Wednesday, March 21, 2012 at 11:59am by riel

Phisics (Urgent)!!!!!!!!!!!!!!!!!!!!!!
sorry I told you wrong for c)... if friction and spring are the same, given friction static and kinetic coefficient is the same, it will move back
Sunday, January 12, 2014 at 9:24am by some0ne

physics
I'm assuming you're referring to kinetic friction here, in either case (static or kinetic friction) however the following method is able to find the answer. Friction=mass*g*friction constant In this case the force of friction is equal and opposite to 20N, so Friction= -20. -20...
Wednesday, October 26, 2011 at 2:43pm by Peter

physics
2.A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor? 3. A car travels around a circle with a diameter of 500 m at a constant speed of 25 m/s. The static ...
Monday, May 24, 2010 at 10:12am by ray

physics
A large box is loaded into the very back of a pickup truck and is not tied down. The truck then goes down the road at 20.0 m/s. The coefficient of static friction is 0.80 and the coefficient of kinetic friction is 0.45 between the box and the bed of the truck. What is the ...
Thursday, October 20, 2011 at 12:47pm by ....

physics
A crate slides down a ramp inclined at 26.0° from the horizontal. The normal force of the ramp on the crate is 710 N and the coefficient of kinetic friction between the crate’s bottom and the ramp’s surface is 0.330. Find the magnitude of the force of kinetic friction that the...
Tuesday, October 18, 2011 at 6:24pm by ahan

physics
A 220 N crate is pushed along the ground with a horizontal force. The coefficient of kinetic friction is 0.21 and the coefficient of static friction is 0.31. The crate moves at a constant speed of 4.1 m/s. a) Draw a free-body diagram for the crate. b) What is the size of the ...
Tuesday, November 15, 2011 at 6:25pm by Kelsey

physics
A 13 N horizontal force pushes a block weighing 4.5 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving initially. In unit-vector ...
Sunday, March 6, 2011 at 12:25pm by karim

physics
A 10 N horizontal force pushes a block weighing 4.9 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving initially. In unit-vector ...
Sunday, October 23, 2011 at 6:54pm by Andrea

physics
A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20, and the coefficient of kinetic friction is 0.15. The sled is attached to a rope, horizontally, in which the tension force is slowly increased. How much tension force applied...
Tuesday, November 6, 2012 at 7:49pm by anon

physics
A 17 N horizontal force F pushes a block weighing 3.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.65, and the coefficient of kinetic friction is 0.45. Assume that the block is not moving initially. (a) Will the block move? ...
Wednesday, July 14, 2010 at 3:57pm by Sam

physics
A 12 N horizontal force pushes a block weighing 5.0 N against a vertical wall (Fig. 6-26).The coefficient of static friction between the wall and the block is 0.60, and the coefficient of kinetic friction is 0.40. Assume that the block is not moving initially. (a) Will the ...
Sunday, January 5, 2014 at 8:46am by Hamed

physics
a blockof mass 100 kg tied to a donkey that moves with constant accelaration of 20centimeter over second squared up a 30 degrees incline. what is the force with which the donkey pulls on the block parallel to the incline? The coefficient of kinetic friction between the kinetic...
Tuesday, May 4, 2010 at 1:30pm by dai

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 ...
Thursday, March 14, 2013 at 1:18am by Anonymous

PHYSICS
xample 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 ...
Thursday, March 14, 2013 at 1:18am by Anonymous

Physics
A block of mass m1 is on top of a block of mass m2. Block 2 is connected by an ideal rope passing through a pulley to a block of unknown mass m3 as shown. The pulley is massless and frictionless. There is friction between block 1 and 2 and between the horizontal surface and ...
Sunday, June 23, 2013 at 7:24pm by Rose

Physics
4. A force of 48 N is required to start a 7.8 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? = (b) Does the coefficent of friction have a unit? A. No, it is a ratio B. No, the units are not real C...
Sunday, February 23, 2014 at 7:03pm by Rian

physics mechanics
A 2 kg mass rests on a horizontal table with a light spring with a force constant of 200 Nm-1 attached to it. The coefficient of static friction between the mass and the table is 0.7 and the coefficient of kinetic friction is 0.5. How far must the spring be stretched ...
Saturday, October 26, 2013 at 7:51pm by njood

physics- please respond
A 16kg sled starts up a 28 degree incline with a speed of 2.4m/s . The coefficient of kinetic friction is = 0.27. part a)How far up the incline does the sled travel? part b)What condition must you put on the coefficient of static friction if the sled is not to get stuck at the...
Thursday, May 24, 2012 at 2:09am by julie

Physics
A skater with an initial speed of 5.90 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible. (a) The coefficient of kinetic friction between the ice and the skate blades is 0.125. Find the deceleration caused ...
Friday, March 14, 2014 at 1:24pm by Elle

physics
The work done by friction is -(1/2) M V^2, no matter what the coefficient of firction is. With a + sign, it is the work that the puck does against friction, which equals the initial kinetic energy. If you compute the friction force and multiply it by the distance the puck ...
Thursday, March 19, 2009 at 3:45am by drwls

physcs
I w /8.0 s = angular momentum decrease rate = torque = friction force* radius w is the initial angular velocity = 55*2*pi/60 = 5.76 rad/s I is the moment of inertia Solve for the friction force and use that and the applied normal force to get the coefficient of kinetic friction.
Saturday, April 17, 2010 at 9:40pm by drwls

physics
A 11.0 box is released on a 37 incline and accelerates down the incline at 0.25 .What is the coefficient of kinetic friction in units uk? What is the friction force impeding its motion in N?
Friday, October 15, 2010 at 9:19pm by Anne

physics
Use the fact that it goes down the incline at constant speed, together with the angle of the incline, to determine the kinetic friction coefficient, Uk. Weight component down the incline = Friction force M g sin 30 = M g cos30*Uk Uk = tan30 = 0.5774 After it reaches the bottom...
Sunday, January 15, 2012 at 11:07am by drwls

physics
In the figure the coefficient of static friction between mass (MA) and the table is 0.40, whereas the coefficient of kinetic friction is 0.28 ? part a) What minimum value of (MA) will keep the system from starting to move? part b) What value of(MA) will keep the system moving ...
Monday, May 7, 2012 at 11:16pm by ally

physics
In the figure the coefficient of static friction between mass (MA) and the table is 0.40, whereas the coefficient of kinetic friction is 0.28 ? part a) What minimum value of (MA) will keep the system from starting to move? part b) What value of(MA) will keep the system moving...
Tuesday, May 8, 2012 at 1:18pm by ally

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 please help !
In the figure the coefficient of static friction between mass (MA) and the table is 0.40, whereas the coefficient of kinetic friction is 0.28 ? part a) What minimum value of (MA) will keep the system from starting to move? part b) What value of(MA) will keep the system moving ...
Tuesday, May 8, 2012 at 1:43am by ally

physics please help !
In the figure the coefficient of static friction between mass (MA) and the table is 0.40, whereas the coefficient of kinetic friction is 0.28 ? part a) What minimum value of (MA) will keep the system from starting to move? part b) What value of(MA) will keep the system moving ...
Tuesday, May 8, 2012 at 1:58am by ally

physics
In Figure P4.30, m1 = 10.5 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. Figure P4.30
Sunday, February 21, 2010 at 8:08pm by nat

Physics
A 2.5 kg block is launched up a ramp at 9.0 m/s. If the ramp is 35 degrees above the horizontal and the coefficient of static friction is 0.60, while the coefficient of kinetic friction is 0.25. a. How far does the block go up the ramp from its starting point? b. What speed ...
Thursday, October 20, 2011 at 10:52pm by Me

physics
You don't need to know the mass of the block, but you DO need to know the kinetic coefficient of friction, Uk. They should have provided a numerical value for Uk, unless they want the angle expressed in terms of Uk The angle of the ramp is tan^-1(Uk) The coefficient of ...
Monday, September 13, 2010 at 11:18pm by drwls

Physics
A 24 kg box is released on a 21 degree incline and accelerates down the incline at 0.27 m/s^2. a) Find the friction force impeding its motion. b) What is the coefficient of kinetic friction?
Sunday, September 19, 2010 at 5:54pm by Robert

physics
A still block slides over a still surface,if the mass of the pot is 2.00kg what is the force of friction opposing the motion?coefficient of kinetic friction is taken as 0.42.Gravity is 9.8
Thursday, November 24, 2011 at 12:12am by mary

Physics
A 13.0 kg box is released on a 33 degree incline and accelerates down the incline at o.20 m/s^2. A. Find the friction force impeding it's motion B. What is the coefficient of kinetic friction
Tuesday, June 12, 2012 at 10:22pm by Mike

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 ...
Tuesday, October 5, 2010 at 5:46pm by Anonymous

physics
A force of 48 N is required to start a 7.8 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? \mu_s = (b) Does the coefficent of friction have a unit? A. No, it is a ratio B. No, the units are not ...
Friday, February 21, 2014 at 1:13pm by shawn

Physics
Consider a car is heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is involved—that...
Friday, February 21, 2014 at 8:42pm by Maura

physics
A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (b) The truck barely exceeds this acceleration and then moves ...
Thursday, October 4, 2012 at 11:47pm by Anonymous

physics
A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on level ground. What is the...
Thursday, October 4, 2012 at 11:45pm by Anonymous

physics- MC QUESTIONS
1. You push a block up a ramp with friction. The block is moving at constant speed ? A) The force you push with is greater than the force of kinetic friction. B) The force you push with is less than the force of kinetic friction. C) The force you push with is equal to the ...
Thursday, May 3, 2012 at 11:57pm by emiie

physics
how? what will be when the distance is 5 m and, coefficient of kinetic friction equal to 0.1?
Sunday, March 20, 2011 at 4:45pm by debjit

physics
The value of the friction force equals the horizontal component of the pulling force, Ff = 39 cos57 = 21.2 N Divide that force by the weight (M*g)to get the kinetic friction coefficient.
Sunday, November 28, 2010 at 10:29pm by drwls

Physics
Is the 0.20 a static friction coefficient? Is the 0.10 a kinetic friction coefficient? Those are the types you need to solve the problem. First calculate the maximum friction force (Ftop) that the top block can withstand without sliding. M(top)*g *0.2 = Ftop Then calculate the...
Sunday, July 17, 2011 at 10:46pm by drwls

Physics
A person of mass 70kg slides across a slippery floor at 2m/s. If the coefficient of kinetic friction is 0.05 and that of static friction is 0.35. Find the distance the person will slide before stopping.
Wednesday, March 31, 2010 at 9:57am by Joachim

physics
A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?) between the tires and the road is 0.42. What is the radius of the shortest turn that the bicyclist can safely make?
Monday, November 11, 2013 at 10:36pm by Liz

physics
A 7.0 kg bundle starts up a 44° incline with 140 J of kinetic energy. How far will it slide up the incline if the coefficient of kinetic friction between
Sunday, October 17, 2010 at 5:20pm by Anonymous

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
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
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 ...
Tuesday, December 11, 2012 at 11:52pm by Asia

Physics
a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the box b. determine the ...
Saturday, February 25, 2012 at 1:16pm by Allie

physics
a 25.0kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. the coefficient of kinetic friction between the box and the inclined plane is 0.200. determine the force of kinetic friction acting on the box. determine the ...
Friday, March 16, 2012 at 12:05pm by Anonymous

Physics
A 35 kg box rest in the bed of a truck. The coefficient of static friction between the box and the truck bed is 0.30 and the coefficient of friction of kinetic friction is 0.10. A) Calculate the maximum acceleration the truck can have before the box slides backwards. B) The ...
Saturday, October 27, 2012 at 5:50pm by Sammy

physics PLEASE HELP (very very confused)
2 blocks are connected by a rope of negligible mass are being dragged by a horizontal force. Suppose F= 68.0N, m1= 12.0kg, m2= 18.0kg and the coefficient of kinetic friction between each block annd the surface is 0.100. a.) draw free body diagram for each block b.) determine ...
Wednesday, October 17, 2007 at 9:18am by ~christina~

Physics
A box of textbooks of mass 25.3 kg rests on a loading ramp that makes an angle (ALFA) with the horizontal. The coefficient of kinetic friction is 0.260 and the coefficient of static friction is 0.330 . A) As the angle (ALFA) is increased, find the minimum angle at which the ...
Saturday, November 18, 2006 at 3:30am by Jasijo

Physics
Consider the figure below. (Let w1 = 150 N and w2 = 38.0 N.) (a) What is the minimum force of friction required to hold the system of the figure in equilibrium? N (b) What coefficient of static friction between the 150-N block and the table ensures equilibrium? (c) If the ...
Sunday, October 7, 2012 at 11:30pm by Kali

physics- please respond
A 16kg sled starts up a 28 degree incline with a speed of 2.4m/s . The coefficient of kinetic friction is = 0.27. part a)How far up the incline does the sled travel? part b)What condition must you put on the coefficient of static friction if the sled is not to get stuck at the...
Thursday, May 24, 2012 at 10:18pm by julie

physics- please respond
A 16kg sled starts up a 28 degree incline with a speed of 2.4m/s . The coefficient of kinetic friction is = 0.27. part a)How far up the incline does the sled travel? part b)What condition must you put on the coefficient of static friction if the sled is not to get stuck at the...
Friday, May 25, 2012 at 1:59am by julie

Physics
A 2.3 kg steel block is at rest on a steel table. A horizontal string pulls on the block. The coefficient of static friction for steel on steel is 0.80 (page 163) while the coefficient of kinetic friction is 0.60 while the acceleration due to gravity is 9.80 m/s2. If the ...
Monday, October 10, 2011 at 6:51pm by Me

PHYSICS
6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
Sunday, February 23, 2014 at 7:10pm by SHAWN

Physics (dynamics)
A 47.0 kg slab rests on a frictionless floor. A 18.0 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.50, while the kinetic coefficient of friction is 0.40. The top block is acted upon by a force of 120 N. What is the ...
Saturday, March 10, 2012 at 9:41pm by Andrew

physics
a worker lays a rubber handled 0.500kg hammer down a sloped roof. it slides down the roof to a level portion of the roof where it slides another 2.oo m long this horizontal surface. the coefficient of friction between the rubber handle and the shingles is 0.850 a)draw free ...
Saturday, January 12, 2013 at 3:15pm by teed

physics
a 2 kg object moving at 5 m/s enters a surface with the coefficient of kinetic friction is .1 and is brought to a full stop. If the cart moved 12.8 m calculate: a) the net work done on the object over the 12.8 m distance (I got 6.4j, but it's probably wrong) b) change in ...
Wednesday, January 21, 2009 at 6:50pm by naomi

physics
In the figure below, m1 = 10.0 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60, and the coefficient of kinetic friction is 0.30. m1 is on a table connected to m2 by a string that is on a pulley. m2 is hanging off the table ...
Wednesday, September 28, 2011 at 5:34pm by Dan

phy
When you push a 1.82-{\rm kg} book resting on a tabletop, it takes 2.21 N to start the book sliding. Once it is sliding, however, it takes only 1.52 N to keep the book moving with constant speed. 1-What is the coefficient of static friction between the book and the tabletop? 2...
Monday, July 18, 2011 at 7:28pm by pop

physics
If the table is smooth, it should be N=69N normal to the table in all cases. If the table is rough, with a coefficient of kinetic or static friction of μ, then it falls into two cases: There is no motion, T<μN, T=tension in rope. Then the force exerted on the box by ...
Thursday, October 8, 2009 at 10:07pm by MathMate

Physics
A package of dishes (mass 50.0 kg) sits on the flatbed of a pickup truck with an open tailgate. The coefficient of static friction between the package and the truck's flatbed is 0.330, and the coefficient of kinetic friction is 0.230. (a) The truck accelerates forward on level...
Tuesday, October 16, 2012 at 3:50pm by Kira

physics
A block M1 of mass 16.5 kg sits on top of a larger block M2 of mass 26.5 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.425. The kinetic friction coefficient between the lower block and the flat surface is 0.125. A ...
Saturday, February 22, 2014 at 11:03am by Mimi

Physics, Science
A 26 kg block is connected to an empty 1 kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.435 and the coefficient of kinetic friction between the table and the block is 0.320. Sand is gradually ...
Sunday, October 3, 2010 at 9:12pm by Shae

physical
a crate rest on a ramp that makes an angle of tangent with the horizontal.the coefficient of kinetic friction is 0.35 and the coefficient of static friction is 0.45.the inclination of the ramp is slowly increased.(a)find the angle at which the crate starts to slip down the ...
Thursday, September 6, 2012 at 9:08am by kim

Physics
When you push a 1.82-kg book resting on a tabletop, it takes 2.30 N to start the book sliding. Once it is sliding, however, it takes only 1.46 N to keep the book moving with constant speed. Q1. What is the coefficient of static friction between the book and the tabletop? Q2. ...
Monday, March 7, 2011 at 1:04am by Randy

Physics
You need to specify kinetic friction coefficient and the initial velocity.
Sunday, December 4, 2011 at 1:43am by drwls

Physics
A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 300-N force is instead pulling the block at an angle of 20.0 ...
Thursday, November 14, 2013 at 6:39pm by DROSP

Physics
A 1000N crate is being pushed across a level floor at a constant speed by a force F of 300N at an angle of 20.0 degrees. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 300-N force is instead pulling the block at an angle of 20.0 ...
Friday, November 15, 2013 at 7:15pm by DROSP

physics
Calculate the friction force using the kinetic coefficient of friction, Uk = .7. Call the friction force Ff Ff = M*g*cos15*Uk Let the distance it travels be X When Ff*X equals the initial kinetic energy plus any gravitational potential energy decrease, all of the available ...
Saturday, October 9, 2010 at 12:04am by drwls

physics
A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the block C.... the normal ...
Friday, October 8, 2010 at 11:57pm by Bolo

physics
A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the block C.... the normal ...
Saturday, October 9, 2010 at 12:11am by Bolo

Physics
A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the block C.... the normal ...
Saturday, October 9, 2010 at 9:53am by Esthere G

Physics
This is a homework question and I have no idea what I'm doing wrong. A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ės = 0.611, and the kinetic friction coefficient is ėk = 0.467. The ...
Sunday, October 28, 2012 at 5:02pm by Jamey

physics
A professor drives off with his car (mass 840 kg), but forgot to take his coffee mug (mass 0.37 kg) off the roof. The coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.4. What is the maximum acceleration of the car...
Saturday, January 28, 2012 at 9:03pm by Rachel

physics
A professor drives off with his car (mass 840 kg), but forgot to take his coffee mug (mass 0.37 kg) off the roof. The coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.4. What is the maximum acceleration of the car...
Saturday, January 28, 2012 at 9:04pm by Rachel

physics
A professor drives off with his car (mass 800 kg), but forgot to take his coffee mug (mass 0.35 kg) off the roof. The coefficient of static friction between the mug and the roof is 1.1, and the coefficient of kinetic friction is 0.5. What is the maximum acceleration of the car...
Thursday, February 23, 2012 at 7:06pm by Luke

physics
A professor drives off with his car (mass 850 kg), but forgot to take his coffee mug (mass 0.39 kg) off the roof. The coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.4. What is the maximum acceleration of the ...
Saturday, February 22, 2014 at 11:49am by josh

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