Question

what is meant by +be,-ve &0 work?? give example for each​

Answer 1

Answer:

Explanation:

When force acts in the direction of displacement the work is said to be positive.

Similarly When in opposite direction it is said to be negative.

When there is no displacement or the forces are acting in the direction perpendicular to the displacement then work is said to be zero.

Answer 2

Explanation:

example: When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction. 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.