Question

If a 50 kg student is standing on the edge of a cliff. Find the student’s gravitational potential energy if the cliff is 80 m high.

Answer 1

Student’s(50 kg) gravitational potential energy if the cliff is 80 m high = 39.2 kJ

Step-by-step explanation:

Potential energy is given by the expression, PE =mgh, m is the mass, g is the acceleration due to gravity value and h is the height.

Here mass of student, m = 50 kilogram

Height of cliff , h = 80 meter

Acceleration due to gravity =
`9.8m/s^2`

Potential energy, PE = 50 * 9.8 * 80 = 39200 J

= 39.2 kJ

Student’s(50 kg) gravitational potential energy if the cliff is 80 m high = 39.2 kJ