Question

Work done by the centripetal force in the circular motion is zero negative or positive explain. ​

Answer 1

Answer:

Since, the particle always moves in a direction perpendicular to the radial direction in circular motion. Therefore, the dot product is always zero and hence, the work done by centripetal force in a circular motion is always zero.

I hope it helps u ☺️☺️✌️❣❣........

Answer 2

Answer:

POSITIVE WORK: The work done on an object is said to be positive work when force and displacement are in same direction.

Example: When an object moves on horizontal surface, force and displacement acts in same direction. So, work done is positive.

NEGATIVE WORK: The work done is said to be negative work when force and displacement are in opposite direction.

Example: When an object is thrown upwards,the force of gravity is in downward direction whereas displacement acts in upward direction.  

ZERO WORK: The work done is said to be zero 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.