Question

the work done to take an object of mass 20 kg to a height of 10 m is ....​

Answer 1

$\small{\underline{\sf{\red{Given:\rightarrow}}}}$

• $\sf{Mass= 20kg}$

• $\sf{Height\ or\ Displacement = 10m}$

$\small{\underline{\sf{\orange{Find:\rightarrow}}}}$

• $\tt{WORK\ DONE=??}$

$\small{\underline{\sf{\pink{Formula \ used:\rightarrow}}}}$

• $\boxed{\sf{Work\ done = Force \times Displacement }}$

• $\boxed{\sf{Force= Mass \times Acceleration}}$

$\small{\underline{\sf{\green{SoLution:\rightarrow}}}}$

$\sf{\implies F=20 \times 10= 200J }$

Put value of F in work done formula we get,

$\sf{\therefore W= 200 \times 10 = 2000J}$

_________________________

Answer 2

Given ,

• Mass (m) = 20 kg
• Height (h) = 10 m

As we know that ,

Work = Energy

Potential energy (PE)= mgh

Thus ,

PE = 20 × 10 × 10

PE = 2000 Joule

$\therefore$ The work done is 2000 J or 2 Kilo Joule