a frictionless wire AB is fixed on a sphere of radius R. A very small spherical ball slips on this wire . The time taken by the ball to slip from A to B is
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Answer:
Explanation:
Acceleration of body along Ab is gcostheta.
Distance travelled in time T sec=1/2(gcostheta)^2
From triangle abc, AB=2Rcostheta; 2Rcostheta=1/2gcostheta t^2
T=4R/g or t=2 underroot R/g
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