Question

a 0.30kg apple hangs from a branch. if the apple has 7.35J of gravitational potential energy, what is the height of the apple above the ground

Answer 1

Explanation:

an apple a day keeps the doctor away

Answer 2

Given - Mass of apple - 0.30 kilogram

Gravitational potential energy of apple - 7.35 joules

Find - Height of apple above the ground.

Solution - Gravitational potential energy is given by the formula - U = m*g*h. In the formula, U stands for gravitational potential energy, m refers to mass of body, g represents gravitational field and h stands for height.

Keeping the given values in formula to calculate height -

h = U/m*g

Assuming g to be 10 m/s².

h = 7.35/0.30*10

h = 2.45 metres

Hence, the height of apple from ground is 2.45 metres.