SSC MTS EXAM

SSC

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which energy is being described? Masses that have work done on them to lift them up in a gravitational field
A
Kinetic energy
B
thermal energy
C
GPE
D
Elastic / strain energy
Explanation: 

Detailed explanation-1: -Gravitational potential energy is the energy an object has due to its position above Earth, energy due to its height. We know this energy exists because it takes effort to lift an object up to a height and also because when we release an object, it falls, gaining kinetic energy.

Detailed explanation-2: -Section Summary. Work done against gravity in lifting an object becomes potential energy of the object-Earth system. The change in gravitational potential energy, PEg, is PEg = mgh, with h being the increase in height and g the acceleration due to gravity.

Detailed explanation-3: -The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg)put into (or gained by) the object-Earth system. This energy is associated with the state of separation between two objects that attract each other by the gravitational force.

Detailed explanation-4: -Gravitational potential energy is the energy possessed or acquired by an object due to a change in its position when it is present in a gravitational field. In simple terms, it can be said that gravitational potential energy is an energy that is related to gravitational force or to gravity.

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