Answer:
E = 1.76 J
Step-by-step explanation:
Given that,
Mass of an object, m = 0.4 kg
It moves by a vertical distance of 0.45 m in the Earth's gravitational field.
We need to find the change in its gravitational potential energy. It can be given by the formula as follow :
So, the change in its gravitational potential energy is 1.76 J.