College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A block of mass m is on an inclined ramp. The ramp makes an
angle θ with respect to the horizontal, as shown. The ramp has
friction, with coefficient of kinetic friction μk and static friction μs.
This experiment takes place on earth.
The block has an initial speed of v up the ramp. It travels a
distance d along the ramp before it stops.
Answer using variables, please.
a) Draw a free body diagram clearly showing all the forces acting on the block while it is moving
up the ramp.
b) Calculate the work done by the Normal force as the block travels the distance d.
Is it positive, negative, or zero?
c) Calculate the work done by the Weight force as the block travels the distance d.
Is it positive, negative, or zero?
d) Calculate the work done by the Friction force as the block travels the distance d.
Is it positive, negative, or zero?
e) If the block comes to rest, how far has it travelled?
Use the work-energy principle and your results of parts b), c), and d).
f) Briefly (one sentence) explain why this problem could not be solved using conservation of
energy.
angle θ with respect to the horizontal, as shown. The ramp has
friction, with coefficient of kinetic friction μk and static friction μs.
This experiment takes place on earth.
The block has an initial speed of v up the ramp. It travels a
distance d along the ramp before it stops.
Answer using variables, please.
a) Draw a free body diagram clearly showing all the forces acting on the block while it is moving
up the ramp.
b) Calculate the work done by the Normal force as the block travels the distance d.
Is it positive, negative, or zero?
c) Calculate the work done by the Weight force as the block travels the distance d.
Is it positive, negative, or zero?
d) Calculate the work done by the Friction force as the block travels the distance d.
Is it positive, negative, or zero?
e) If the block comes to rest, how far has it travelled?
Use the work-energy principle and your results of parts b), c), and d).
f) Briefly (one sentence) explain why this problem could not be solved using conservation of
energy.
Transcribed Image Text:d
v=0
m
Ꮎ
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