How much work is done in lifting a 1.2-kg book off the floor to put it on a desk that is 0.7 m high? Use the that the acceleration due to gravity is g = 9.8m/s². (b) How much work is done in lifting a 20-lb weight off the ground?

Principles of Physics: A Calculus-Based Text
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Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom
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(a) How much work is done in lifting a 1.2-kg book off the floor to put it on a desk that is 0.7 m high? Use the
9.8m/s². (b) How much work is done in lifting a 20-lb weight
fact that the acceleration due to gravity is g
=
6 ft off the ground?
Transcribed Image Text:(a) How much work is done in lifting a 1.2-kg book off the floor to put it on a desk that is 0.7 m high? Use the 9.8m/s². (b) How much work is done in lifting a 20-lb weight fact that the acceleration due to gravity is g = 6 ft off the ground?
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