Question

what is zero work and explain zero work ​

Answer 1

Answer:

ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero.

example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.

Answer 2

Dear student,

Work done is zero for the following conditions;

• if a body displaces perpendicular to the direction of force then work done is zero .
• if there is no displacement then work done is zero .
• if applied force is zero then work done is zero

For example;

• a person carrying a load and moving horizontally on a platform does no work against Gravity.
• when a body moves in a circle the work done by the centripetal force is zero.
• the tension in the string of a simple pendulum is always perpendicular to its displacement so work done by tension is zero.
• a person carrying a load on his head and standing at a given place does no work.