Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 91P
(a)
To determine
The speed of the bicycle.
(b)
To determine
The speed of the bicycle.
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A box with a mass of 0.5 slugs lies on an inclined plane making an angle of 30o with the horizontal. If the coefficient of kinetic friction between the box and the plane is 0.4, what is the magnitude of the force that must be applied parallel to the incline to keep the box moving down the incline at a constant speed?
A mover is pushing a 148kg box up a ramp. The ramp is inclined at an angle of 30.4 degrees. Since the box is on wheels, assume that friction is negligable. Calculate the force the mover exerts to push the box up the ramp at a constant rate of 1.26 m/s. Assume he pushes parallel to the ramp.
A force of 600 N is applied on a block of mass M to pull it at a constant velocity up the incline at an angle of 30degrees with the horizontal. The coefficient of kinetic friction between the surface of the incline and the block is 0.5. Calculate the mass of the block.
Chapter 5 Solutions
Physics for Scientists and Engineers
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- In figure (a) below, a sled is held on an inclined plane by a cord pulling directly up the plane. The sled is to be on the verge of moving up the plane. In figure (b) below, the magnitude F required of the cord's force on the sled is plotted versus a range of values for the coefficient of static friction us between sled and plane: F1 = 2.5 N, F, = 5.3 N, and µɔ = 0.65. At what angle 0 is the plane inclined? o above the horizontal F F2 (a) (b)arrow_forwardYou want to use a rope to pull a 12 kg box of books up a plane inclined 30 degrees above the horizontal. The coefficient of kinetic friction is 0.28.The rope pulls parallel to the incline. What force do you need to exert on the rope if you want to pull the box with a constant acceleration of 0.50 m/s squared yp the plane?arrow_forwardAs shown in the figure below, a box of mass m = 59.0 kg (initially at rest) is pushed a distance d = 70.0 macross a rough warehouse floor by an applied force of FA = 228 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and the box is 0.100. Determine the following. (For parts (a) through (d), give your answer to the nearest multiple of 10.) (a) work done by the applied force (c) work done by the normal force (e) Calculate the net work on the box by finding the sum of all the works done by each individual force. (f) Now find the net work by first finding the net force on the box, then finding the work done by this net force.arrow_forward
- A box weighing 1000 N is sitting in an inclined plane with an angle of 45°. Given the coefficient of friction of 0.25, calculate the horizontal force that can start the box the moving forward.arrow_forwardA box of 450N is lying in an inclined plane with angle of 35 degrees. If the applied load to move the box is 269N. Determine the net Ff and the acceleration of the box if the coefficient of static friction is 0.35 and the coefficient of kinetic friction is 0.28.arrow_forwardAn inextensible cable of negligible mass is used to drag a log on a roughhorizontal surface. The tension in the cable is 850 N and it acts at an angle of 35°to the horizontal. The log is dragged over a distance of 45m. The frictional forceexperienced by the log is 150 N. Calculate the net force acting on the log.arrow_forward
- Suppose a box is pushed along an inclined plane of angle θ and then letgo. If it has an initial velocity of 10.0 m/s, how far will the box movealong the plane if the coefficient of kinetic friction is 0.200?arrow_forwardA block of rubber is placed on an adjustable inclined plane and released from rest. The angle of the incline is gradually increased. (a) The block does not move until the incline makes an angle of 428 to the horizontal. Calculate the coefficient of static friction. (b) The block stops accelerating when the incline is at an angle of 358 to the horizontal. Determine the coefficient of kinetic friction.arrow_forwardA block of mass 1.96kg is accelerated across a rough surface by a rope passing over a pulley, as shown in the figure below. The tension in the rope is 14.0N, and the pulley is 10.8cm above the top of the block. The coefficient of kinetic friction is 0.350. Calculate the value of x at which the acceleration becomes zero.arrow_forward
- A 50.0kg object is pushed across a level surface with a diagonal force of 550 N causing it to move forward at a constant velocity of 6.00 m/s. Calculate the coefficient of kinetic friction. Can you please write it instead.arrow_forwardA large box of mass 11.4 kg sits on a ramp that makes an angle of 30.1 degrees with the horizontal. The surface of the ramp is rough and the coefficients of static and kinetic friction are given as 0.56 and 0,38, respectively. We exert a force up the ramp (parallel to the ramp surface) so that the box does not move. Calculate the maximum and the minimum magnitude of the force we can exert so that the box does not move. Enter the difference between the maximum and the minimum force values here: Fmax-Fmin (in Newtons). On your paper, show all the forces on free-body diagrams, clearly show your work, your derivation and calculations. Make sure to include your physics-based reasoning.arrow_forwardYou want to run up a hill starting from standstill. The hill is at an angle of 30 degrees with respect to hortizontal and has a coefficient of static friction of 0.3. How long will it take to reach a top speed of 25.2km/h?arrow_forward
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