Question

What is the amount of work done in raising a glass of water weighing $0.5kg$ through a height of $50cm?(g=10m/s^2$ )

• A. $1J$
• B. $0.4J$
• C. $0.20J$
• D. $2.5J$

Answer 1

The correct option is D $2.5J$

The amount of the work done in raising the glass of the water through a height is calculated by the amount of potential energy

$W=mgh$

By substituting the value in the above equation we get

$W=0.5\times 10\times 0.5$

Hence the work done in raising the glass is$2.5J$