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Glencoe Physics: Principles and Problems, Student Edition

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 76A

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Question

1-2

1. What should be the least magnitude of the force F to lift the block with the
lever shown? The mass of the block is 10kg. The mass of the lever is
negligible.
5 cm
50 cm
F
a. 20 N
b. 200 N
c. 1000 N
d. 2000 N
e. 5 N
2. One end of a rod rests on a support; the other is suspended on a rope as
shown. The mass of the rod is 20 kg. What is the tension of a rope?
a. 10 N
b. 100 N
c.
5N
d. 200 N
hlo by 1 cm. What force is needed to stretch
the same 1 cm?

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