Two metallic blocks having masses in the ratio 2:3 are made to slide down a friction less inclined plane starting initially from rest position. When these blocks reach the bottom of the inclined plane, they will have their kinetic energies in the ratio
- A. 2:3
- B. 3:5
- C. 3:2
- D. 7:4
Answer: A. 2:3
Explanation: Conservation of energy: $PE = KE$. $mgh = KE$. Since h is same, $KE \propto m$. Ratio 2:3.