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  •  If a block moves from a height h above the ground then the work done by the gravitational force  is given by_______   Option: 1</stro

 If a block moves from a height h above the ground then the work done by the gravitational force  is given by_______ 
 

Option: 1

- \int_{0}^{h}Wdy


Option: 2

\int_{0}^{h}Wdy


Option: 3

- \int_{-h}^{h}Wdy


Option: 4

\int_{-h}^{h}Wdy


Answers (1)

best_answer

 

 

 

  1. Non-Conservative field-

  • In Non- conservative field, work done by the force depends on the path followed between any two positions/points.

  • In Non-conservative field, work done by the force along a closed path is non-zero.

  1. Non-Conservative Force-

  • The forces corresponding to Non-Conservative field are known as non-conservative forces.

  • Non-Conservative Force is dissipative.

                    Example: Frictional force, Viscous force

So,

The block moves from the height h to the ground, then work done is given by 

- \int_{0}^{h}Wdy.

 Negative sign is because the work done is in the opposite direction of the motion of the body.
 

Posted by

Sayak

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