Question

Chapter-Work energy and power


Define work is positive , zero and negative ???



In very short answer i will definitely mark right and short answer as BRAINLIEST ANSWER

Answer 1

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 forward 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.

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.

Hope it will be helpful :)

Answer 2

work is positive-when the displacement of a object occur in the direction of force applied.

work is zero-when the displacement of a object is not occurred in the direction of force applied .

work is negative-when the force and displacement is in opposite direction.

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