Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 7, Problem 47P
To determine
The downward force of the rails on the car.
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A skater starts from rest at the top of a frictionless hill that is inclined at 12⁰ with the horizontal. The hillside is 80.0 m long and the coefficient of friction between the snow and the skis is 0.125. At the bottom of the hill, the snow is level and the coefficient of friction is unchanged. Calculate the distance the skater slides along the horizontal portion of the snow before coming to rest.
A 40 kg box has an initial velocity of 6 m/s
down a 30-degree inclined plane at an initial
height of 4 meters. The coefficient of friction
between the box and the ground is 0.4.
Calculate the box's velocity when it reaches
the bottom of the inclined plane.
d
13) A 10 kg box is initially at rest at the top of a frictionless inclined plane that rises at 30° above the horizontal. At the top,
the box is initially 8.0 m from the bottom of the incline, as measured along the incline (see figure). When the box is
released from this position, it eventually stops at a distance d from the bottom of the inclined plane along a horizontal
surface, as shown. The coefficient of kinetic friction between the horizontal surface and the box is 0.20, and air resistance
is negligible. Find the distance d in meters. Hint: You can use dynamics and kinematics but applying conservation of
energy may be much easier.
W₁-K₁-K₁
W₁ = d
Fid=14-1₂
8.0 m
30°
A) 20 m B) 15 m C) 25 m D) 5.0 m E) 10 m
any?
Chapter 7 Solutions
Physics for Scientists and Engineers
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