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A book sitting on a shelf have 740 J of potential energy, at a height of 1.8 m. What is the mass of the book? 13053.6 J 13053.6 m 41.950 kg 41.950 J 1 point
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5 votes
A book sitting on a shelf have 740 J of potential energy, at a height of 1.8

m. What is the mass of the book?
13053.6 J
13053.6 m
41.950 kg
41.950 J
1 point

User Al Joslin
by
8.6k points

1 Answer

4 votes
M=42.950kg
Formula: P.e.= mgh ->m= p.e/gh
We have :
p.e = 740j
g=9.8m/s^2
h=1.8
M= 740/1.8x9.8
=41.950kg
User Joseph Fraley
by
6.8k points
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