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July 25, 2014

Search: static friction

Number of results: 5,906

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 ...
June 23, 2013 by Rose

physics
A dockworker loading crates on a ship finds that a 21-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant ...
September 30, 2012 by Anonymous

physics
A dockworker loading crates on a ship finds that a 21-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant ...
October 2, 2012 by monic

physics
A box of textbooks of mass 24.8 rests on a loading ramp that makes an angle with the horizontal. The coefficient of kinetic friction is 0.25 and the coefficient of static friction is 0.35. At this angle, how fast will the box be moving after it has slid a distance 4.9 along ...
September 27, 2011 by Bradley

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 ...
May 7, 2012 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...
May 8, 2012 by ally

Physics
A 1200-kg car rounds a corner of radius r = 45 m. If the coefficient of static friction between tires and the road is 0.93 and the coefficient of kinetic friction between tires and the road is 0.75, what is the maximum velocity the car can have without skidding?
October 5, 2010 by Anonymous

Static Fricition
An object of mass 2k is placed on the edge of the floor of a merry go round of radius 4 meters. The coefficient of static friction is 0.4 for the floor and the object. 1.How much work (in joules) is done on the object by the static frictional force to get the object up to ...
March 13, 2012 by Jarrett

PHYSICS HELP PLEASE !!!!!
A 21 kg object is placed on an incline with friction. The incline is raised slowly from zero degrees and at 60.71 degrees, the object begins to slide down the incline. What is the coefficient of static friction? Be as accurate as possible with your answer and be sure to enter ...
October 25, 2011 by Amanda

PHYSICS HELP PLEASE !!!!!
A 21 kg object is placed on an incline with friction. The incline is raised slowly from zero degrees and at 60.71 degrees, the object begins to slide down the incline. What is the coefficient of static friction? Be as accurate as possible with your answer and be sure to enter ...
October 25, 2011 by Amanda

Physics- PLEASE HELP
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 27, 2012 by Shannon

Physics URGENT!!!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 28, 2012 by Shannon

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 ...
May 8, 2012 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 ...
May 8, 2012 by ally

Physics
A 10-kg wooden box rests on a wooden ramp. 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 the ramp is at a 25o angle? the ramp is at a 45o angle? what is the acceleration of ...
October 5, 2010 by Anonymous

phsics
A block is at rest on an inclined plane whose elevation can be varied. The coefficient of static friction is μs= 0.4, and the coefficient of kinetic friction is μk = 0.16. The angle of elevation θ is increased slowly from the horizontal. At what value of θ ...
October 24, 2010 by help

physics
what is the force required to start moving a 25kg box across a concrete floor with a coefficient of static friction of .65?
November 29, 2009 by april

Physical science
A box with a mass of 2,ookg rests on a horizontal surface.Calculate the maximum static friction if ms=0,4oo
January 28, 2013 by Busisiwe

physics
A circular curve on a highway is designed for traffic moving at 27 m/s. The radius of the unbanked curve is 160 m. What is the minimum coefficient of friction between tires and the highway necessary to keep cars from sliding off the curve? Is the friction static or kinetic? (...
February 27, 2014 by Anonymous

Physics- Someone Please Help!!!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 29, 2012 by Shannon

Physics- Someone Please Help!!!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 29, 2012 by Marge

Physics- Can someone please help me!!!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 30, 2012 by Marge

Physics- Elena please help!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 30, 2012 by Marge

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 ...
October 7, 2012 by Kali

Physics
In a certain amusement-park ride, riders stand with their backs against the wall of a spinning vertical cylinder. The floor falls away and the riders are held up by friction. If the radius of the cylinder is 4.2 m, find the minimum number of revolutions per minute to prevent ...
February 11, 2014 by Anonymous

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...
May 24, 2012 by julie

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 ...
January 26, 2011 by Sarah

physics
A ladder of mass 34.4 kg and length 3.36 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.326; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
April 6, 2011 by Anonymous

physics
A ladder of mass 39.0 kg and length 3.18 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.298; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
April 10, 2011 by I need help

physics
Bob is pulling a 30kg filing cabinet with a force of 200N , but the filing cabinet refuses to move. The coefficient of static friction between the filing cabinet and the floor is 0.80.What is the magnitude of the friction force on the filing cabinet? Express your answer to two...
March 20, 2014 by salar

Physics
Bob is pulling a 30kg filing cabinet with a force of 200N , but the filing cabinet refuses to move. The coefficient of static friction between the filing cabinet and the floor is 0.80. What is the magnitude of the friction force on the filing cabinet? Express your answer to ...
May 11, 2014 by T

Physics- Elena please help! I'm so confused!!
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0 with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, 7...
October 29, 2012 by Ted

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 Classical Mechanics
A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 4.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 40.0∘ with respect to the horizontal. Assume that ...
December 12, 2013 by Robert

Physics
In a pulley system, can the force of friction equal the tension in the rope? Let's say there is a mass on a table connected to a pulley system (placed at the corner of the table), while the other mass hangs from the table ... can the force of friction equal the tension? ...
October 17, 2009 by Lisa

physics
An ox exerts a force of 7100N to the horizontal direction without slipping. If the ox has a weight of 8000N, what is the minimum coefficient of static friction?
December 9, 2009 by Steve

Physics II
A block begins to slide down a ramp after being elevated to an angle of 55 degrees. What is the coefficient of static friction?
February 2, 2010 by Brad

physics
A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.470, respectively.
February 16, 2012 by cody

Physics
An object of mass 20kg slides down an inclined plane at an angle of 30 degree to the horizontal. The coefficient of static friction is?
April 25, 2013 by Sbjjayo

PHYSICS
An object is placed on an incline with friction. The incline is slowly raised from a zero degrees and at 29.2 degrees, the object begins to slide down the incline. The incline is then raised to 40.5 degrees and the object is placed back on the incline. The coefficient of ...
October 21, 2011 by Ashley

Physics.
A mass of m1 = 12 kg is placed on an incline with an inclination angle of 50 degrees, a coefficient of kinetic friction of 0.16, and a coefficient of static friction of 0.89. m1 is tied to a rope which runs parallel to the incline and runs over a pulley to a hanging mass of m2...
October 21, 2011 by Amanda

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 ...
October 20, 2011 by Me

physics
(a)block A weigh 60N. the coefficient of static friction between the block and the surface on which it rests is 0.25. the weight W is 12N and the system is at equilibrium. find the friction force exerted on block A. (b)find the maximum weight W for which the system will remain...
October 8, 2010 by andrew

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 ...
March 6, 2011 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 ...
October 23, 2011 by Andrea

Physics
Block A in the figure weighs 48.0N . The coefficient of static friction between the block and the surface on which it rests is 0.250. The weight w is 6.00N and the system remains at rest. -Find the friction force exerted on block A. -Find the maximum weight w for which the ...
March 8, 2014 by Julia

engineering mechanics
A person A is trying to keep his balance while on a sled B that is sliding down an icy incline. Let mA = 78kg and mB = 25 kg be the masses of A and B, respectively. In addition, let the static and kinetic friction coefficients between A and B be μs = 0.4 and μk = 0....
December 31, 2012 by q

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 ...
November 15, 2011 by Kelsey

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...
November 6, 2012 by anon

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 ...
October 20, 2011 by ....

physics
The wheel of a car has a radius of 0.390 m. The engine of the car applies a torque of 466 Nm to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road must be applying a force of static friction to the wheel that produces a ...
December 9, 2011 by nagham

physics
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 95-m at a speed of 80 km/h.
February 7, 2010 by Anonymous

physics
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 89 at a speed of 93 ?
October 3, 2010 by Karlee

Physic
If the coefficient of static friction for tires on a road is 0.25, at what maximum speed can a car round a level 47.5 m radius curve without slipping?
January 3, 2011 by Diana

Physics
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 85 m at a speed of 95 km/h?
March 25, 2012 by Kristina

physics
If 4.5 kg object is sitting at rest on a 30 degree incline that has a coefficient of static friction of .19, what is the net force down the plane? Does it start sliding?
February 19, 2013 by Aaron

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...
October 16, 2012 by Kira

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 ...
May 24, 2010 by ray

Physics
The wheel of a car has a radius of 0.390 m. The engine of the car applies a torque of 282 N m to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road must be applying a force of static friction to the wheel that produces a ...
November 15, 2012 by Elizabeth

Physics
A block with mass m1 on a plane inclined at angle  to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is us and the coefficient of kinetic friction is ...
April 14, 2012 by modjadji

Physics
In the Daytona 500 car race in Daytona, FL, a curve in the oval track has a radius of 316 m (near the top of the curve) and is banked at 31.0 O . a) What speed would be necessary to make this turn if there was no friction on the road? b) If the coefficient of static friction ...
July 26, 2012 by Zac

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? ...
July 14, 2010 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 ...
January 5, 2014 by Hamed

Physics
A 21.0-g metal cylinder is placed on a turntable, with its center 90 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is s = 0.84. A thin, massless string of length 90 cm connects the center of the turntable ...
October 21, 2011 by mymi

Phyiscs
A wooden box with a mass of 10.0kg rests on a ramp that is inclined at angle of 25 degrees to the horizontal. A rope attached to the box runs parallel to the ramp and then passes over a frictionless pulley. A bucket with a mass of m hangs from the end of the rope. The ...
February 6, 2014 by Lupita

physical
A block with mass m1 on a plane inclined at angle to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is Us s and the coefficient of kinetic friction is Uk...
April 5, 2012 by Lebza

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 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 ...
October 26, 2013 by njood

physical
three blocks,each with same mass, stacked one upon the other. the bottom block rest on a frictionlesshorizontal surface and is being pulled by a force F that is parrallel to this surface.the surface where the blocks touch each other have identical coefficients of static ...
July 26, 2012 by nkosingiphile

College Physics
A 3.0 kg black is at reat on a horizontal floor. If you push horizontally on the 3.0 kg block with a force of 12.0 N, it just starts to move. What is the coefficient of static friction?
September 14, 2010 by Tam

physics
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 31 km/h and the coefficient of static friction between the tires and the road is 0.29?
September 28, 2010 by annamaria

Physics
Suppose that you are standing on a train accelerating at 0.33g. What minimum coefficient of static friction must exist between your feet and the floor if you are not to slide?
October 11, 2010 by Jason

Physics
Suppose that you are standing on a train accelerating at 0.33g. What minimum coefficient of static friction must exist between your feet and the floor if you are not to slide?
October 11, 2010 by Jason

Physics!
Suppose that you are standing on a train accelerating at 0.39g. What minimum coefficient of static friction must exist between your feet and the floor if you are not to slide?
September 27, 2011 by Bridge

physics
an object of mass 150kg is pulled on a horizontal rough ground by a force of 900newton(N).find the coefficient of static friction (taken g=10m/s)
November 10, 2011 by john emmanuel

Physics
A force of 250 N is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static friction.
January 30, 2012 by Maria Ellah

physics
determine the static coefficient of friction if a box will be rasied at rest, right up until the point that the board on which it is sitting gets raised to 53 degrees.
April 23, 2012 by Syd

physics
A 10 kg mass is sitting on a 25 degree incline. A constant force of 49N is applied up the plane. The coefficient of static friction is .25. Does it go up or down or does it stay put?
February 19, 2013 by Aaron

Physics
What is the smallest radius of an unbanked (flat) track around which a motorcyclist can travel if her speed is 25 km/h and the coefficient of static friction between the tires and road is 0.28?
June 13, 2013 by Holly

Physics
A ladder of mass 39.4 kg and length 2.88 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.282; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
June 25, 2012 by James

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
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 HELP PLEASE !!!!!
A mass of m1 = 12 kg is placed on an incline with an inclination angle of 50 degrees, a coefficient of kinetic friction of 0.16, and a coefficient of static friction of 0.89. m1 is tied to a rope which runs parallel to the incline and runs over a pulley to a hanging mass of m2...
October 21, 2011 by Amanda

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...
May 24, 2012 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...
May 25, 2012 by julie

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 ...
October 27, 2012 by Sammy

Physics
A skier stands on a 5 degree slope . if the coefficient of static friction is 0.1, does the skier start to slide?
October 23, 2012 by Ridley Scott

Physics
A sled weighing 60 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is 0.100. A penguin weighing 70 N rides on the sled. If the coefficient of static friction between the penguin and the sled is 0.700, find the ...
December 6, 2006 by Armando

Physics
A force of 10N applied normal to the wall can just prevent the sliding of a wooden block. If co-efficient of static friction is 0.2.Find the weight of the body.
August 7, 2011 by avi

federal university lokoja, kogi state
If a horizontal force of 200Newton is just sufficient to along the wooden,floor,calculate the coefficient of static friction
February 16, 2013 by harun

Physics
A wooden block with mass 0.26{\rm kg} rests on a horizontal table, connected to a string that hangs vertically over a friction-less pulley on the table's edge. From the other end of the string hangs a 0.20{\rm kg} mass. What minimum coefficient of static friction \mu _{{\rm s...
October 18, 2012 by Nichole

physics
what is the equal and opposite force the force of friction like if a block is at rest on a table static friction is stil exerted by the table onto the block keeping it from moving what is the equal and opposite force of this force?
September 3, 2009 by physics

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 ...
October 10, 2011 by Me

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 ...
March 10, 2012 by Andrew

physics
What,is,the,minimum,coefficient,of,static,friction,between,the,block,and,the,surface,that,will,keep,the,block,from,moving?(F1,=5.0N,F2=4.0N,and.m=5.0kg.)
January 19, 2008 by melissa

physics
8)If an airplane is moving at a constant velocity of 400 m/s for 20 s, what is its acceleration during this period? 0 m/s^2 b/c no change 10)You try to move a couch across the floor but it doesn't move. What is the other force acting on the couch? Static friction 11)You ...
March 31, 2008 by Jon

physics
A 1900 kg car moves along a horizontal road at speed v0 = 26.4 m/s. The road is wet, so the static friction coefficient between the tires and the road is only μs = 0.17 and the kinetic friction coefficient is even lower, μk = 0.119. The acceleration of gravity is 9.8...
December 18, 2013 by RACHEL

Physics
A racecar driver speeds around a circular track of radius 100 m at a velocity of 50 km/hr. The coefficient of friction us between his tires and the road is 0.20. It begins to rain, reducing us to 0.15. What must he change his velocity to in order to maintain his path without ...
March 29, 2007 by Bobby

Physics
An object rests on an inclined surface thanks to the presence of static friction forces between the object and the surface. The magnitude of the friction force that prevents the object from sliding is found to be 30 N. Now, the angle that the surface makes with respect to the...
October 22, 2009 by Nikita

Physics
A 25-kg crate requires a horizontal force of 40 N to set it in motion. What is the coefficient of static friction between the crate and the floor?
October 13, 2010 by Kelsey

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