A block of mass 10 kg is moving along $x$-axis under the action of force $F = 5 x \mathrm {~N}$. The work done by the force in moving the block from $x = 2 \mathrm {~m}$ to 4 m will be $\_\_\_\_$ J.
A block of mass 10 kg is moving along $x$-axis under the action of force $F = 5 x \mathrm {~N}$. The work done by the force in moving the block from $x = 2 \mathrm {~m}$ to 4 m will be $\_\_\_\_$ J.