To form a pendulum, a 0.092 kg ball is attached to one end of a rod of length 0.62 m and negligible mass, and the other end of the rod is mounted on a pivot. The rod is rotated until it is straight up, and then it is released from rest so that it swings down around the pivot. When the ball reaches its lowest point, what are (a) its speed and (b) the tension in the rod? Next, the rod is rotated until it is horizontal, and then it is again released from rest. (c) At what angle from the vertical does the tension in the rod equal the weight of the ball? (d) If the mass of the ball is increased, does the answer to (c) increase, decrease, or remain the same?
To form a pendulum, a 0.092 kg ball is attached to one end of a rod of length 0.62 m and negligible mass, and the other end of the rod is mounted on a pivot. The rod is rotated until it is straight up, and then it is released from rest so that it swings down around the pivot. When the ball reaches its lowest point, what are (a) its speed and (b) the tension in the rod? Next, the rod is rotated until it is horizontal, and then it is again released from rest. (c) At what angle from the vertical does the tension in the rod equal the weight of the ball? (d) If the mass of the ball is increased, does the answer to (c) increase, decrease, or remain the same?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter5: More Applications Of Newton’s Laws
Section: Chapter Questions
Problem 6OQ: A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with...
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Question
To form a pendulum, a 0.092 kg ball is attached to one end
of a rod of length 0.62 m and negligible mass, and the other end of
the rod is mounted on a pivot. The rod is rotated until it is straight
up, and then it is released from rest so that it swings down around
the pivot. When the ball reaches its lowest point, what are (a) its
speed and (b) the tension in the rod? Next, the rod is rotated until it
is horizontal, and then it is again released from rest. (c) At what angle
from the vertical does the tension in the rod equal the weight of
the ball? (d) If the mass of the ball is increased, does the answer to
(c) increase, decrease, or remain the same?
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