Question

The work done to move an object of mass $2kg$ to a height of $50m$ from the ground is ________________$J$.

($g=10m{s}^{-2}$)

• A. 100
• B. 1000
• C. 500
• D. 5000

Answer 1

The correct option is B

1000

Step 1: Given data

$$\begin{gathered} Massoftheobject\left(m\right)=2kg \\ Accelerationduetogravity\left(g\right)=10m{s}^{-2} \\ Height\left(h\right)=50m \end{gathered}$$

Step 2: Finding the work done

We know that work done is given as,

$Workdone\left(W\right)=m\times g\times h$

Where “W” is the work done.

Putting the values, we get

$$\begin{gathered} W=2\times 10\times 50 \\ 1000J \end{gathered}$$.

Therefore, The work done to move an object of mass $2kg$ to a height of $50m$ from the ground is $1000J$.

Hence, option (B) is the correct answer.