Principles of Physics: A Calculus-Based Text
5th Edition
ISBN: 9781133104261
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 5, Problem 28P
A child of mass m swings in a swing supported by two chains, each of length R. If the tension in each chain at the lowest point is T, find (a) the child’s speed at the lowest point and (b) the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)
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A 37.0-kg child swings in a swing supported by two chains,each 2.96 m long. The tension in each chain at the lowestpoint is 418 N. Find (a) the child’s speed at the lowest pointand (b) the force exerted by the seat on the child at the lowestpoint. (Ignore the mass of the seat.)
Two masses are connected by a light string that passes over a frictionless pulley, as shown below. The masses are m1 = 6.00 kg, and m2 = 7.00 kg. If the coefficient of friction between the incline and m2 is 0.200 and the angle of the incline is 35.0°, find (a) acceleration of the two masses, (b) the tension in the string, and (c) the speed of each mass 2.00 s after being released from rest. Also, determine (d) what m2 would have to be in order to have the system accelerate in the direction opposite of what you found in (a). Assume m1 stays at 6.00 kg.
A cart m1 with mass of 500 g rests on an inclined plane that makes an angle 0
=D15° with the horizontal. It is connected to a mass m2 with mass of 200g
suspended vertically off the end of a pulley as shown in the figure below.
If the lead weight falls 85 cm, determine: (sin 15° - 0.259 ; cos 15° 0.966)
(a) The final speed of the system
(b) The acceleration of the system
(c) The tension in the string
(Assume the string and pulley contribute negligible mass to the system and
that friction is kept low enough to be ignored.)
string
pulley
cart (m,)
track
suspended mass (m,)
angle of inclination (0)
Chapter 5 Solutions
Principles of Physics: A Calculus-Based Text
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