Question

A heavy mass is lifted up to a certain height with the help of a pulley, string and a machine. Now, the string is cut by using scissors. The heavy mass falls down and strikes a big nail just below it on the ground. The nail goes further into the ground.
Energies are represented by X and Y in the figure. X and Y are respectively .

• A. Potential energy, potential energy
• B. Kinetic energy, potential energy
• C. Potential energy, kinetic energy
• D. Kinetic energy, kinetic energy

Answer 1

Answer: (C)

Potential energy, kinetic energy

Potential energy is a form of energy that results from an object's position or arrangement of parts.

So, $X=$ Potential Energy.

Kinetic energy is energy possessed by an object in motion.

$Y=$ Kinetic energy.