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  • A block of mass 10 kg is moving along x-axis under the action of force F = 5x N. The work done by the force in moving the block from x = 2m to 4m will be ________J.<div class='qna-option

A block of mass 10 kg is moving along x-axis under the action of force F = 5x N. The work done by the force
in moving the block from x = 2m to 4m will be ________J.

Option: 1

30


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Work done,   w=\int Fdx

\begin{aligned} & \mathrm{w}=\int_2^4 5 \mathrm{xdx} \\ & \mathrm{w}=\frac{5}{2}\left[\mathrm{x}^2\right]_2^4 \\ & \mathrm{w}=\frac{5}{2}(16-4) \\ & \mathrm{w}=30 \mathrm{~J} \end{aligned}

 


 

Posted by

Rishabh

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