486(D)
Put θ=0,There will be no need of obstacle to keep the sphere in equib. as inc.plane would become horizontal. Hence h=0, so (D)
3 Answers
486
535It can be further verified,
by putting θ=90, where the min. h required will be R.
- Aditya Agarwal Sir, can we solve it using Rotational and trans. eqbm. at angle theta as well?Upvote·0· Reply ·2014-03-13 03:28:52
Anurag Ghosh But by putting 90 we can get A and D as our answer na?- Aditya Agarwal To check with theta=0
Akash Anand Yeah...we can do it by normal method as well.