Question

When an object is moving through a certain height above the ground, its energy increases. This is because the work done on it, against gravity. The energy present in such an object is called gravitational potential energy. Thus gravitational potential energy of an object at a point above the ground is defined as the work done in raising it from ground to that point against the gravity.
a) What is energy ?What is it unit
b) What type of energy is stored in the spring of a watch?​

Answer 1

Answer:

What is energy

The capacity of a body to perform work is called its energy.

ii) The units of work and energy are the same i.e., joule in S.I. system and erg in C.G.S. system.

Explanation:

What type of energy is stored in the spring of a watch?

When a spring is compressed, it stores energy in form of elastic potential energy

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Answer 2

A. Energy is defined as the ability to do work.

B. SI Unit of energy is Joule, denoted as J.

    other common unit of energy is calorie.

C. In spring of a watch, potential energy is stored.