A book that weighs 0.35 kilograms is kept on a shelf that’s 2.0 meters above the ground. A picture frame that weighs 0.5 kilograms will have the same gravitational potential energy as the book when it’s raised to a height of ___ meters.

Respuesta :

E p = m · g  · h
E p ( book ) = 0.35 kg · 9.8 m/s² · 2 m = 6.86 J
E p ( picture frame ) = 6.86 J 
( same gravitational  potential energy as the book )
6.86 = 0.5 · 9.8 · h
6.86 = 4.9  h
h = 6.86 : 4.9
h = 1.4 m
Answer: ... to a height of 1.4 m. 

The potential energy when this item is raised to a height of 1. 4 meters.

The formula for potential energy

E = m*g*h

E = potential energy

m = mass = 0.35 kg

g = gravitational force= 9.8m/s

h = height = 2 meters

E = 2 * 0.35 * 9.8

= 6.86 joules

E = 6.86

m = 0.5

g = 9.8

h = unknown

6.86 = 0.5*9.8*h

h = 1.4 metres

The picture frame would be of the P.E if it is raised to 1.4 meters.

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