A body of mass $10\, kg$ is dropped to the ground from a height of $10\, metres$. The work done by the gravitational force is ............. $\mathrm{J}$ $(g = 9.8\,m/{\sec ^2})$
A body of mass $10\, kg$ is dropped to the ground from a height of $10\, metres$. The work done by the gravitational force is ............. $\mathrm{J}$ $(g = 9.8\,m/{\sec ^2})$
$-490$
$+ 490$
$-980$
$+ 980$
A body of mass $10\, kg$ is dropped to the ground from a height of $10\, metres$. The work done by the gravitational force is ............. $\mathrm{J}$ $(g = 9.8\,m/{\sec ^2})$
As the body moves in the direction of force therefore work done by gravitational force will be positive.
$W = Fs = mgh = 10 \times 9.8 \times 10 = 980J$