Question

Ar sbjectes douapped from 50m height? what will be the change in its potential energy if the mass of the object is too 100kg.​

Answer 1

Explanation:

Gravitational potential energy is given by the expression,

W = m g h

where,

h = Height above the ground = 10 m

m = Mass of the object = 50 kg

g = Acceleration due to gravity = 10 ms-2

W = 50 × 10 × 10 = 5000 J.

At half-way down, the potential energy of the object will be, begin mathsize 12px style 5000 over 2 space equals space 2500 space straight J end style

At this point, the object has an equal amount of potential and kinetic energy. This is due to the law of conservation of energy. Hence, half-way down, the kinetic energy of the object will also be 2500 J.

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