A boy spends 800 joule of energy while lifting a body of mass 40 kilogram from a well. calculate the depth of the well.
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Physics
Work, Energy and Power
Introduction to Work
What will be the potential ...
PHYSICS
What will be the potential energy of a body of mass 5 kg kept at a height of 10 m ?
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Answer is C.
Potential energy is energy stored in an object. This energy has the potential to do work. Gravity gives potential energy to an object. This potential energy is a result of gravity pulling downwards. The gravitational constant, g, is the acceleration of an object due to gravity. This acceleration is about 10 meters per second on earth. The formula for potential energy due to gravity is PE = mgh. As the object gets closer to the ground, its potential energy decreases while its kinetic energy increases.
In this case, a body of mass 5 kg kept at a height of 10 m. So the potential energy is given as 5 * 10 *10 = 500 J.