Physics-
General
Easy
Question
Portion AB of the wedge shown in figure is rough and BC is smooth. A solid cylinder rolls without slipping from A to B. If AB = BC, then ratio of translational kinetic energy to rotational kinetic energy, when the cylinder reaches point C is – 
- 3/5
- 5
- 7/5
- 8/3
- 3/5
- 5
- 7/5
- 8/3
The correct answer is: 5
K = KT
or KT + KR = KT
KR = (– 1)KT KR = 
KT
At point B : KT + KR = mg × h
KR = 
At point C : KT + = mg × 2h
KT = 
= 5
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