PHYSICS F/SCIEN.+ENGRS. W/SAPLING >IC<
6th Edition
ISBN: 9781319336127
Author: Tipler
Publisher: MAC HIGHER
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Chapter 4, Problem 66P
(a)
To determine
The free body diagram for both of the boxes and show that
(b)
To determine
Whether the result of the part (a) is plausible and if the answer makes sense both in the limit that
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A)A block with mass m = 2 kg slides down from a friction less ramp (mu = 0). If the angle theta is 25 degrees, find the acceleration of the block.
B)Find the magnitude of the normal force between the ramp and the block.
(b) Write an expression for the sum of the forces in the x-direction using the variables from the above Free Body Diagram.
ΣFx=
Part (c) Given the coordinate system specified in the problem statement, write an expression for the sum of the forces in the y-direction.
Part (d) Write an expression to show the relationship between the maximum friction force,
Ff, and the normal force, F.
Part (e) Calculate the magnitude of F, in Newtons, if F is at its maximum.
A brick of mass M has been placed on a rubber cushion of mass m. Together they are sliding to the right at constant velocity on an ice-covered parking lot. (a) Draw a free-body diagram of the brick and identify each force acting on it. (b) Draw a free-body diagram of the cushion and identify each force acting on it. (c) Identify all of the action– reaction pairs of forces in the brick–cushion–planet system
Chapter 4 Solutions
PHYSICS F/SCIEN.+ENGRS. W/SAPLING >IC<
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- Problem 1: A rope with a constant and known tension T is pulling a block by way of a massless pulley a height h above the block. The block has a mass M and is moving over a floor with a known coefficient of friction of u but with a nonzero acceleration. a) Draw a Free Body Diagram for the block, along with your choice of coordinate system b) Write Newton's 2nd Law for the box as a vector and decomposed in both of your directions c) List any constraints on the motion on the block to continue sliding on the floor d) Write cos(0) and sin(0) as functions of x and h e) Find the acceleration as a func- tion of the distance r. Your answer will look like a(x) = Take T, m, h, and μ to be known. should be replaced by what you found in (d) M T T h garrow_forwardA book of mass m is pushed against a smooth frictionless wall by a force P that makes an angle 0 the horizontal. Find: a) The normal force on the book. b) The acceleration of the block in terms of P, m, 0, and constants. c) Look at the special values of the angle to see if the above answers make sensearrow_forwardIn the figure, the coefficient of kinetic friction between the block and inclined plane is 0.23, and angle 0 is 53º. (a) What is the acceleration (including sign) of the block if the block is sliding down the plane? Take the direction down the plane to be the positive direction. (b) What is the acceleration (including sign) of the block if the block is sliding up the plane? Take the direction down the plane to be the positive direction. (a) Number Units (b) Number Unitsarrow_forward
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