A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.850 m/s encounters a rough horizontal surface of length e = 0.65 m as in Figure P5.18. If the coefficient of kinetic fric- tion between the crate and rough surface is 0.358 and he exerts a constant horizontal force of 275 N on the crate, find (a) the magnitude and direction of the net force on the crate while it is on the rough surface, (b) the net work done on the crate while it is on the rough surface, and (c) the speed of the crate when it reaches the end of the rough surface. Figure P5.18

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.850 m/s encounters a rough horizontal surface of length e = 0.65 m as in Figure P5.18. If the coefficient of kinetic fric- tion between the crate and rough surface is 0.358 and he exerts a constant horizontal force of 275 N on the crate, find (a) the magnitude and direction of the net force on the crate while it is on the rough surface, (b) the net work done on the crate while it is on the rough surface, and (c) the speed of the crate when it reaches the end of the rough surface. Figure P5.18

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 63PQ: A 75.0-g arrow, fired at a speed of 110 m/s to the left, impacts a tree, which it penetrates to a...

See similar textbooks

Similar questions

A makeshift sign hangs by a wire that is extended over an ideal pulley and is wrapped around a large potted plant on the roof as shown in Figure P6.10. When first set up by the shopkeeper on a sunny and dry day, the sign and the pot are in equilibrium. Is it possible that the sign falls to the ground during a rainstorm while still remaining connected to the pot? What would have to be true for that to be possible? FIGURE P6.10 Problems 10 and 11.
If a 1.6 kg object is initially at rest on a frictionless, horizontal surface and subjected to a 12.2 N force in the positive x-direction over a distance of 3.99 meters, what will the object’s final speed be? Assume the answer in in m/s.
A 400 g block with an initial speed of 80 cm/s slides along a horizontal tabletop against a friction force of 0.70N. (a) How far will it slide before stopping? (b) What is the coefficient of friction between the block and the tabletop?
A cart with mass 15.0 kg moves in a straight line on a frictionless horizontal surface. Take this surface to be along the x-axis. The cart has an initial speed of 8.00 m/s and it was pushed 5.00 m in the same direction as the initial velocity by an external force with a magnitude of 20.0 N. What is the cart's final speed?
A 170-Newton horizontal force is exerted upon a 6.3-kg box to move it across a level surface at a constant velocity of 1.9 m/s. The force of friction encountered by the box is N.
A 0.30 kg puck is being pushed across a table with a horizontal force of 2.0 N. It starts from rest and is pushed for 13 seconds, ending with a speed of 1 m/s. Calculate the coefficient of friction μk between the puck and the table.
An applied force of 40.7 N directed at an angle of -18.5 degrees with respect to the +x direction acts on a 2.76 kg mass that is initially at rest while on a horizontal surface. In movir distance of 2.35 m in the +x direction, the object changes its kinetic energy by 38.7 J. What is the coefficient of kinetic friction?
A 4.00-kg block is sent up a ramp inclined at an angle 0 = 29.0° from the horizontal. It is given an initial velocity VO = 15.0 m/s up the ramp. Between the block and the ramp, the coefficient of kinetic friction is k coefficient of static friction is μg = 0.60. = 0.40 and the What distance D along the ramp's surface does the block travel before it comes to a stop? D = m %
A 200-g hockey puck is launched up a ramp that is inclined at a 30° angle above the horizontal. The coefficients of static and kinetic friction between the puck and the ramp are µs = 0.40 and µk = 0.30, respectively, and the puck's initial velocity at the base is 3.8 m/s parallel to the sloping surface of the ramp. What speed does the puck have when it slides back down to its starting point?
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.850 m/s encounters a rough horizontal surface of length ℓ, = 0.65 m as in Figure P5.18. If the coefficient of kinetic friction between the crate and rough surface is 0.358 and he exerts a constant horizontal force of 275 N on the crate, find (a) the magnitude and direction of the net force on the crate while it is on the rough surface, (b) the net work done on the crate while it is on the rough surface, and (c) the speed of the crate when it reaches the end of the rough surface.
A warehouse worker exerts a constant horizontal force of magnitude 85 N on a 40 kg box that is initially at rest on the horizontal floor of the warehouse.When the box has moved a distance of 1.4 m, its speed is 1.0 m/s.What is the coefficient of kinetic friction between the box and the floor?
In a circus performance, a monkey is strapped to a sled andboth are given an initial speed of 4.0 m/s up a 20.0° inclinedtrack. The combined mass of monkey and sled is 20. kg, andthe coefficient of kinetic friction between sled and incline is0.20. How far up the incline do the monkey and sled move?