Question

A mass of 5kg is raised to a height of 2.5 m above the ground. Calculate its potential energy​

Answer 1

Answer:

122.5 J

Explanation:

Potential energy = $mgh$

Assuming g = 9.8 $\frac{m}{s^2}$

Then Potential Energy = m x g x h = 5 kg x 2.5 m x 9.8 $\frac{m}{s^2}$ = 122.5 J

Answer 2

Given :-

A mass of 5kg is raised to a height of 2.5 m above the ground

To Find :-

Potential energy​

Solution :-

We know that

PE = mgh

PE = potential energy

m = mass

g = acceleration due to gravity

h = height

PE = 5 × 9.8 × 2.5

PE = 5 × 98/10 × 25/10

PE = 1 × 98/2 × 5/2

PE = 490/4

PE = 122.5 J

Hence

Potential energy is 122.5 J