Q.
Two identical hollow spheres roll down two inclined planes of same height but of different angles of inclination. Then, they reach the bottom
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a
with same speeds and in same time
b
with different speeds and in different times
c
with same speed but in different times
d
with different speeds in same times
answer is C.
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Detailed Solution
time of travel t=2sa= 2 Lg sinθ1+k2R2 and v =2 g h1+k2R2
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