Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Question
Chapter 7, Problem 52P
(a)
To determine
The initial angle made by an
(b)
To determine
The angle made by the pendulum to the vertical when its speed is
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a pendulum of length L= 1.25 m. Its bob (which effectively has all the mass) has speed v0 when the cord makes an angle u0 =40.0 with the vertical. (a) What is the speed of the bob when it is in its lowest position if v0 = 8.00 m/s? What is the least value that v0 can have if the pendulum is to swing down and then up (b) to a horizontal position, and (c) to a vertical position with the cord remaining straight? (d) Do the answers to (b) and (c) increase, decrease, or remain the same if u0 is increased by a few degrees?
A pendulum consisting of a particle of mass m supported by a light cord of length L is released from a position ho measured from the lowest position,
as shown in the figure below. The cord hits a small peg P located at a distance L/2 vertically below the upper end of the pendulum.
T
ho
m
Ohz ho
g
How high will the mass swing afterwards?
hint: consider the conservation of energy in the system.
h = ho 12
h=2 ho
L
h
OK, once again we have a pendulum, this time of length 1.49 m, which you release from rest at an angle of 41.6 degrees to the vertical. What will be the speed of the pendulum at the instant it reaches an angle of 12.5 degrees above the vertical?
4.08 m/s
2.58 m/s
2.72 m/s
0.83 m/s
Chapter 7 Solutions
Physics for Scientists and Engineers
Ch. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
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