A man standing with 100kg load does not perform work ,why ?
Answers
Answer:
Work is defined as the force which is required to cause a displacement in the object. It is the product of force acting and the displacement caused in the direction of the force.
W = F.s
The unit of work is Newton meter of Joule. One joule is defined as the amount of work done by 1N force when 1m displacement is caused. Work done can be either a positive work or a negative work depending on the direction of displacement.
Work done is said to be positive work when both force and displacement are in the same direction. When the force and displacement are in the opposite direction, the work done is said to be negative. But when force and displacement are at an angle of 90 degrees, the work done is said to be zero.
Energy is defined as the ability of an object to do work. Joules is the unit of energy. There are various forms of energy and they are:
Kinetic energy, potential energy, chemical energy, electrical energy, heat energy, and light energy.
Also, according to the law of conservation of energy, energy can neither be created nor be destroyed but can be transformed from one form to another.
Explanation:
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