Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Question
Chapter 5, Problem 53P
(a)
To determine
To Discuss: Dependency of force F on angle
(b)
To determine
Value of force F at different values of angle θ.
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Chapter 5 Solutions
Physics for Scientists and Engineers
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- A 22-kg crate is on an incline that makes an angle of 30° with the horizontal. If the coefficient of static friction is 0.50, the minimum force that can be applied parallel to the plane to hold the crate at rest is: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 placed on a horizontal surface is being pushed by a force F making an angle 0 with the vertical. If the friction coefficient is u, how much force is needed to get the block just started. Discuss the situation when tane < Larrow_forward
- A Stevedore wants to push a 50 kg crate up a 40 degree ramp. He can push with a maximum 300 N. What is the largest cofficient of friction that he could successfully push against if he slides the crate up at a constant speed? (This question has been already answered, don't answer) What minimum coefficient of friction would be necessary to hold the crate in the other question on the same ramp without it sliding down at all, with no help from the Stevedore? (Answer this question)arrow_forwardThe plane below is inclined of 25 degrees. The block of mass 1 is 15Kg and mass 2 is 4Kg. If the coefficient of kinetic friction is 0.2, calculate the magnitude of the acceleration.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_forward
- A particle of mass 6 kg is placed on a rough plane inclined at an angle a to the horizontal where sin a = 0.8. The coefficient of friction between the particle and the plane is 0.4. An upward force PN actson the particle along a line of greatest slope of the plane. Find the greatest value of Parrow_forwardA block has a mass of 6kg and rests initially on a plane inclined at 35°. What value of force is required to stop the block from sliding if: (a) the plane is frictionless, (b) the plane has coefficients of fractions static and kinetic equal to 0.20 and 0.18respectively? What will the value of the force be if the velocity is constant and is directed upward parallel the incline?arrow_forwardA 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.arrow_forward
- On a horizontal plane a block of mass m = 0.30 kg is placed and initially held at rest. To this block a massless string is attached and it initially keeps another block of mass M = 0.50 kg vertically at rest via a fixed pulley as shown in Figure. The coefficient of kinetic friction between the block m and the plane is Pk -0.25, but the friction between the block M and the vertical wall is zero. Calculate the tension T by string in N. (Hint: First calculate the acceleration of m or M. And set up the equation of motion for M to find the tension T.) T m Marrow_forwardA 250lb block is initially at rest on the flat surface that is inclined at 30 degree. If the coefficient of kinetic friction is 0.30 and the coefficient of static friction is 0.40, find the force required to start the block moving up the planearrow_forwardA tractor of mass 5.40 tonne pulls a 1.40-tonne crate up a hill with a slope angle of 12.0° above the horizontal at a constant speed of 11.0 m/s. (1 tonne is 1000 kg). (a) What acceleration would the tractor have on a level road at that speed? Ignore any frictional losses. (b) Repeat part (a), but now consider that the coefficient of kinetic friction between the crate and the level road is 0.300. Assume that all frictional losses come from the friction between the crate being pulled and the road, and not from the tractor.arrow_forward
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