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May 6, 2016

Search: A worker stands still on a roof sloped at an angle of 33.8° above the horizontal. He is prevented from slipping by a static frictional force of 357 N. Find the mass of the worker

Number of results: 116,212

physics
A worker stands still on a roof sloped at an angle of 23 above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find the mass of the worker.
February 3, 2011 by Anonymous

physics
worker stands still on a roof sloped at an angle of 30 above the horizontal. He is prevented from slipping by a static frictional force of 560 N. Find the mass of the worker.
September 23, 2014 by chidera

physics
The roof on a house rises 1.50 m over a horizontal diestance of 3.50 m. A 72.9-kg roofer stands on the roof. Is the frictional force that keeps the roofer from slipping equal in magnitude to F perpendicular or F paralell? What is its magnitude?
December 7, 2009 by Corey

physics
the roof on a house rises 1 .00 m over a horizontal distance of 3.5 m. a 71 kg roofer stands on the roof. is the frictional force that keeps the roofer from slipping equal in magnitude to fparallel or fperpendicular? what is the magnitude of this force? I'm pretty sure its ...
November 28, 2011 by inclined plane

Physics
A force F = 119 N acts at an angle α = 31◦ with respect to the horizontal on a block of mass m = 22.5 kg, which is at rest on a horizontal plane. The acceleration of gravity is 9.81 m/s 2 . If the static frictional coefficient is s = 0.72, what is the force of ...
January 11, 2016 by andrew

physics
A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is μ = 0.64. What is the ...
November 6, 2014 by stewart

emgineering
A box with a mass of 5.0 kg is placed on a flat sloping surface elevated at 40o to the horizontal. The coefficient of static friction is 0.76. It is prevented from slipping down the slope by a force applied parallel to the slope. What is the magnitude of this force?
November 6, 2015 by Anonymous

physics
Bill the firefighter stands on an 8 meter ladder of weight 355 Newtons leaning against a smooth vertical wall. The ladder makes an angle of 50 degrees with the horizontal floor. The wall cannot provide any frictional force only a normal force. All frictional force acting on ...
November 4, 2012 by Anonymous

Physics
A person pushes on a 62-kg refrigerator with a horizontal force of -256 N; the minus sign indicates that the force points in the −x direction. The coefficient of static friction is 0.61. (a) If the refrigerator does not move, what are the magnitude and direction of the ...
September 27, 2011 by Natalie

Physics
A uniform 5.32 kg solid sphere of radius 0.344 m that is free to roll on a horizontal surface has a light axle passing through its diameter as shown. The axle is connected to a like yoke and in turn a light rope as shown. A constant tension of 7.81 N is applied ot the rope and...
November 14, 2012 by Alphonse

11th grade physics
Rachel pulls her 177N suitcase at a constant speed by pulling on a handle that makes an angle (-) with the horizontal. Using frictional force on the suitcase as 27N and Rachels force on 43N on the handle to calculate the net force. 1. What angle does the handle make with the ...
November 2, 2010 by Zack

physics
A large building has an inclined roof. The length of the roof is 69.5 m and the angle of the roof is 18.0 below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the roof with a constant ...
April 3, 2013 by Anonymous

physics
A 63.8 N crate is pulled up a 5.22 m inclined plane by a worker at constant velocity. If the plane is inclined at an angle of 59 degree to the horizontal and there exists a constant frictional force of 32.6 N between the crate and the surface, what is the force applied by the ...
April 7, 2013 by need help please

physics
A car (m = 1670 kg) is parked on a road that rises 10.3 above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
September 29, 2011 by Anonymous

physics
A car (m = 1540 kg) is parked on a road that rises 18.9 above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
February 19, 2012 by Shelby

Physics
A car (m = 1510 kg) is parked on a road that rises 12.6 above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
December 12, 2012 by shine

physics
A car (m = 1870 kg) is parked on a road that rises 12.1 above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
August 12, 2015 by kat

Southern Union
A large building has an inclined roof. The length of the roof is 64.0 m and the angle of the roof is 20.0 below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the roof with a constant ...
February 8, 2014 by Mary Anne

Physic
Block A of mass 2.2 kg is on block B of mass 5.2 kg as shown in the above figure. The lower block is on a frictionless surface while the coefficient of static friction is 0.3 between the two blocks. a) If they are moving at constant velocity, what is the frictional force ...
October 25, 2015 by Anonimea

Physical Science
The static frictional between a 500 kilogram box of bricks and the floor is 500 Newtons. The kinetic frictional force in only 220 Newtons. How many Newtons of force must a worker exert to get the moving?
September 26, 2012 by Tala

Physics
A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?
August 22, 2014 by JOSH

Physics
A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?
August 22, 2014 by YESHA

PHYSICS
A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity.
August 23, 2014 by Mae

Physics
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 15 above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
November 13, 2009 by Litany

Physics
A crate of potatoes of mass 23.0 kg is on a ramp with angle of incline 30 to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.35. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. I don't understand why I ...
September 23, 2012 by Alyssa

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 ...
January 12, 2013 by teed

mechanics
A crate of mass 80 kg stands on level ground. A worker exerts a horizontal force of 120 N on the crate. If the coefficient of friction between the crate and the ground is 0.25, and F N is the magnitude of the frictional
November 11, 2012 by Karabo

trigo
please po help me. A chimney projects 6 feet above the roof. At a point 10 feet 8 inches down the roof from the base of the chimney,the chimney subtends an angle of 1740' . find the angle at which the roof is inclined to the horizontal.
November 4, 2015 by sam

science
a worker pushes a box with a horizontal force of 50 N over a level distance of 5m. If a frictional force of 43 N acts on the box in a direction opposite to that of the worker, what was the net work done to the box?
March 6, 2011 by KayKay

physices
A man stands on the roof of a building of height 13.8 and throws a rock with a velocity of magnitude 29.3 at an angle of 34.8 above the horizontal. You can ignore air resistance
April 8, 2011 by wala'a sami

Physics
A person, sunbathing on a warm day, is lying horizontally on the deck of a boat. Her mass is 59.6 kg, and the coefficient of static friction between the deck and her is 0.696. Assume that she is moving horizontally, and that the static frictional force is the only force acting...
December 19, 2012 by Sadie

Physics Help Please!!!!
A car is at rest on a horizontal road. What is the value of the frictional force? Explain your answer. A bison stands at rest on the horizontal ground. What is the value of the frictional force? Explain. The normal force always has a direction perpendicular to the surface that...
October 9, 2014 by Tom

Physics
A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 24.0 m/s at an angle of 38.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. got it.... 11.1 m ...
September 16, 2006 by Josh

trigonometry
A carpenter is building a house. He is constructing the roof. The roof has an angle of elevation of 40 from the horizontal. The height he wants to make the roof is 18 feet. How far is it from the bottom edge of the roof to the top of the roof? (Find the hypotenuse to the ...
October 18, 2012 by rose

Physics
A Force,F=10N,applied at an angle of 37 degree above the horizontal,moves a crate a distance of 5m along a rough horizontal surface.A frictional force of 5N opposes the motion.what is the change in kinetic energy?
February 18, 2011 by Joel

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 ...
November 18, 2006 by Jasijo

Physics
A box has a weight of 120 N and is being pulled across a horizontal floor by a force that has a magnitude of 100 N. The pulling force can point horizontally, or it can point above the horizontal at an angle θ. When the pulling force points horizontally, the kinetic ...
October 11, 2015 by Erne

physics
A force of magnitude 25Nis directed at an angle of 37 deg above the horizontal moves a 10 Kg block along a horizontal surface at a constant velocity .How much work is done by this force in moaing the block a distance of 15m?
July 16, 2010 by john

Physics
A solid ball is released from rest and slides down a ramp that makes an angle of 50 degrees with respect to the horizontal. a) What is the minimum coefficient of static friction between the ramp and the ball for no slipping to occur? b) Would this coefficient of static ...
November 17, 2015 by Zack

ap Physics
1. a)A 15.6 kg block is dragged over a rough, horizontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234.Find the work done by the 72.2 N force.The ...
February 26, 2011 by jeff

physics
A 2.0kg box rests on a plank that is inclined at an angle of 65 above the horizontal. The upper end of the box is attached to a spring with a force constant of 25 N/m. If the coefficient of static friction between the box and the plank is 0.17, what is the maximum amount the ...
May 21, 2007 by micole

Physics
he weight of the block in the drawing is 77.0 N. The coefficient of static friction between the block and the vertical wall is 0.490. (a) What minimum magnitude of the force is required to prevent the block from sliding down the wall? (Hint: The static frictional force exerted...
November 7, 2013 by Samantha

Physics
A building has a symmetric roof made from two straight sections at an angle of 20 above the horizontal. The sides are uniform and have a mass of m = 1800 kg. Find the magnitude of the horizontal force that this roof exerts at the top of the wall, pushing it outward. Before ...
November 11, 2007 by Lou-Anne

physics
A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 30.0 m/sat an angle of 42.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. Calculate the magnitude ...
September 14, 2009 by lina

Science
A 110.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 35.0 deg with the horizontal. Find the magnitude of the applied force F.
October 26, 2011 by Mark

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
A 5kg box is pulled for a distance of 12m with a force of 20N along frictionless surface. The force is applied at an angle that is 15 deg. above the horizontal. a.) how much work was done by the applied force? b) how fast will the box be moving at the end of the 12m if it ...
April 12, 2016 by Anne

Physics
A hollow spherical shell with mass 2.45kg rolls without slipping down a slope that makes an angle of 30.0∘ with the horizontal. a.) find the magnitude of the acceleration of the center of mass of the spherical shell. b.) find the magnitude of the frictional force acting ...
March 12, 2015 by Rosae

Physics
A hollow spherical shell with mass 2.45kg rolls without slipping down a slope that makes an angle of 30.0∘ with the horizontal. a.) find the magnitude of the acceleration of the center of mass of the spherical shell. b.) find the magnitude of the frictional force acting ...
March 12, 2015 by Rosae

Physics
A hollow spherical shell with mass 2.45kg rolls without slipping down a slope that makes an angle of 30.0∘ with the horizontal. a.) find the magnitude of the acceleration of the center of mass of the spherical shell. b.) find the magnitude of the frictional force acting ...
March 13, 2015 by Rosae

Physics
A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal force N is exerted on the top of the ladder. A fireman of mass M climbs a distance d upward as measured along the ladder. (a): Assuming the ladder ...
December 6, 2012 by Mike

Physics
A 4.2 10^3 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 18.4◦ with the horizontal. An average frictional force of 4.110^3 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.9 m/s. The ...
December 12, 2012 by alice

Physics
A 3.66 kg block is placed on an inclined surface that makes an angle of 18.5 relative to horizontal. The coefficients of static and kinetic friction between the block and surface are 0.534 and 0.239, respectively. The block remains at rest when released. What is the magnitude...
May 10, 2012 by Anonymous

Physics
A man stands on the roof of a 10.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 38.0 above the horizontal. You can ignore air resistance. Calculate the horizontal distance from the base of the building to the point where the rock strikes ...
February 6, 2008 by Ava

physics
A man stands on the roof of a 10.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 34.0 above the horizontal. You can ignore air resistance. Calculate the horizontal distance from the base of the building to the point where the rock strikes ...
February 21, 2012 by Rei

physics
A man stands on the roof of a 10.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 34.0 above the horizontal. You can ignore air resistance. Calculate the horizontal distance from the base of the building to the point where the rock strikes ...
February 21, 2012 by Rei

physics
a man stands on the roof of a 15.0m tall building and throws a rock with a velocity of magnitude 30.0m/s at an angle of 33 degrees above the horizontal. ignoring resistance calculate the horizontal distance from the base of the building to the point where the rock strikes the ...
June 27, 2014 by kristen

science
A man stands on the roof of a building of height 15.8m and throws a rock with a velocity of magnitude 25.2m/s at an angle of 32.7∘ above the horizontal. You can ignore air resistance. Part A Calculate the maximum height above the roof reached by the rock. y = 9....
March 2, 2014 by sanele

physics
solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is = 0.64. What is the magnitude of...
March 31, 2013 by phil

physics
A man stands on the roof of a 19.0 m tall building and throws a rock with a velocity of magnitude 30.0 m/s at an angle of 30.0 degrees above the horizontal. Ignore air resistance. Calculate the horizontal distance from the base of the building to the point where the rock ...
September 14, 2011 by Meghan

physics
The cart of mass 10 kg shown above moves without frictional loss on a level table. A 30 N force pulls on the cart horizontally to the right. At the same time, a 10 N force at an angle of 60 above the horizontal pulls on the cart to the left. What is the magnitude of the ...
February 4, 2014 by ashley

physics
a man stands on the roof of a building that is 30m tall and throws a rock with a velocity of magnitude of 40m/s at an angle of 33 degress a bove the horizontal. Calculate the following: a.) The maximum height above the roof reached by the rock. b.) The magnitude of the ...
February 7, 2013 by jm

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
A 100 lb block of ice slides down an incline 5.0 ft long and 3.0 ft high. A worker pushes up on the ice parallel to the incline so that it slides down at constant speed. The coefficient of friction between the ice and incline is 0.10. Find the force exerted by the worker. (I'...
March 11, 2015 by N

Physics
What is the horizontal component of the force of an object sloped at a 45 angle. pulling with a force of 110N.
November 12, 2014 by anon

physics
A 2.9 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.0 with the horizontal. An average frictional force of 4.2103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.6 m/s. The acceleration of ...
November 29, 2011 by Matt

physics
A snowball rolls of a roof by accident. The roof is sloped 40.0 o relative to the horizontal. The edge of the roof is 14.0 m above the ground, and the speed of the snowball is 7.00 m/s as it rolls off the roof. Ignore air resistance. Coincidentally, there is a group of ...
February 21, 2016 by tamara

physics
A snowball rolls of a roof by accident. The roof is sloped 40.0 o relative to the horizontal. The edge of the roof is 14.0 m above the ground, and the speed of the snowball is 7.00 m/s as it rolls off the roof. Ignore air resistance. Coincidentally, there is a group of ...
February 23, 2016 by tom

Physics`
A field hockey player's arm and stick form a rigid segment. Assuming she hits the ball when the stick is vertical, which of the following would result in the greatest velocity of the end of her stick immediately before she hits the ball? a) She stands still and swings her arm/...
November 25, 2013 by Caitlin

physics
A 3.1 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 19.5◦ with the horizontal. An average frictional force of 4.4103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.9 m/s. The acceleration...
October 17, 2013 by Anonymous

Physics
A 4.0 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 19.6◦ with the horizontal. An average frictional force of 4.0103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.9 m/s. The acceleration...
December 6, 2013 by Artemis

Physics
After delivering his toys in the usual manner, Santa decides to have some fun and slide down an icy roof. The roof is 7 m in length and makes an angle of 41 with the horizontal. He starts from rest at the top of the roof and accelerates at the rate of 3.9 m/s2. The edge of ...
May 25, 2012 by Tina

physic 1
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 15 degrees above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires? Important: Assume that the road is higher up to the ...
February 13, 2014 by Anonymous

physics
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 15 degrees above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires? Important: Assume that the road is higher up to the ...
February 18, 2014 by Anonymous

Physics
You lose your footing and slide of of your roof. Fortunately, you have placed a safety net whose center is positioned at a horizontal distance of 4.15m, measured from a point directly below the edge of the roof- and indeed you land in the center of the net. If the roof slopes ...
October 19, 2009 by Bill

AP PHYSICS
A 2.30 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 21.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 7.00 m. Find the work done by the kinetic frictional...
November 14, 2010 by Ashley

Physics
A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.4 m down a q = 29 incline. The sphere has a mass M = 3.7 kg and a radius R = 0.28 m. What is the magnitude of the frictional force on the sphere? --The other person did this for ...
April 9, 2010 by rufy

Physics
A man stands on the roof of a building that is 50 m tall and throws a rock with a velocity of 35 m/s at an angle of 50 degrees above the horizontal (a) What is the total time in the air (b) What is the horizontal distance from the base of the building to the point where the ...
December 18, 2013 by Vlad

Physics
A man stands on the roof of a building that is 50 m tall and throws a rock with a velocity of 35 m/s at an angle of 50 degrees above the horizontal (a) What is the total time in the air (b) What is the horizontal distance from the base of the building to the point where the ...
December 18, 2013 by Vlad

Physics
A 3.5 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.2 m/s. The acceleration...
October 17, 2013 by Willow

Physics
A 3.5 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.2 m/s. The acceleration...
October 17, 2013 by Willow

Physics
A 3.5 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1103 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.2 m/s. The acceleration...
October 17, 2013 by Willow

HELP PHYSICS!!!!
a worker pushes a 7kg shipping box along a roller track. assume friction is small enough to be ignored because of the rollers. the worker's push is 25 N directed down and to the right at an angle of 20 degrees. 1. determine the horizontal component of the worker's push 2. ...
February 29, 2012 by C.

Physics
Two children pull a third child on a snow saucer sled exerting forces F1 and F2 as shown from above in Figure 4.36. Find the acceleration of the 49.00-kg sled and child system. Note that the direction of the frictional force is unspecified; it will be in the opposite direction...
March 4, 2014 by Mohanad

physics
A 3.00 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m a) Find the work done by the pulling force (b...
October 26, 2010 by Anonymous

physics
A 280 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 6.00 m. (a) Find the work done by the pulling force. (b) ...
October 28, 2010 by joshua

physics
A 3.00 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m. a) Find the work done by the pulling force (...
October 28, 2010 by Anonymous

physics
A 280 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m. (a) Find the work done by the pulling force. (b) ...
October 28, 2010 by david

Physics
A 2.30 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 21.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 7.00 m. (a) Find the work done by the pulling force...
November 13, 2010 by Andrew

physics
A 1.5 kg chunk of ice slides down a roof sloped at a 60 degree angle with the horizontal. If there is no friction, determine the acceleration of the ice. Show that the amount of mass doesn't matter in part a.
October 26, 2010 by caroline

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

physics
A 3.00 10^2 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m a) Find the work done by the pulling force...
October 26, 2010 by Anonymous

Help, Physics
A 3.00*10^2 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0 above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m. (a) Find the work done by the pulling force...
October 28, 2010 by Anonymous

PHYSICS
There's a bar with length of 6.49m and mass of 5.45kg leaning against a frictionless wall. It makes an angle of 66.08 deg with the ground. A block with mass of 44.98 kg hangs from bar at distance d up from point of contact between bar and floor. The frictional force (us=.371) ...
October 24, 2007 by Alie

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 dock worker loading crates on a ship finds that a 18 kg crate, initially at rest on a horizontal surface, requires a 71 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 ...
March 21, 2013 by Aaron

physics
A dock worker loading crates on a ship finds that a 29 kg crate, initially at rest on a horizontal surface, requires a 90 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving with a ...
December 3, 2013 by sam

physics
A dock worker loading crates on a ship finds that a 29 kg crate, initially at rest on a horizontal surface, requires a 90 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving with a ...
December 3, 2013 by sam

Physics - frictional force
Pushing a grocery cart with a force of 95N applied at an angle of 35deg own from the horizontal, makes the cart travel at a constant speed of 1.2m/s. What is the frictional force acting on the cart?
August 5, 2010 by Shaila

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 k between the table and the block is 0.25. For your own reference, draw a ...
December 10, 2012 by Sierra

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