Question

Alex (40 kg) and Sam (50 kg) are standing at a cliffs of height 15m and 7m, respectively. Alex has potential energy than Sam.

• A. equal
• B. greater
• C. lesser

Answer 1

The correct option is B greater

For Alex,
Mass = 40 kg, Height of cliff = 15 m
Potential Energy = mgh = 40 x 10 x 15 = 6000 J

For Sam,
Mass = 50 kg, Height of cliff = 7 m
Potential Energy = mgh = 50 x 10 x 7 = 3500 J

Hence, Alex will have greater potential energy than Sam.