Motion in A Straight Line

Question: 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 this ball to slip from A to B is

1) \[\frac{{2\sqrt {gR} }}{{g\cos \theta }}\]

2) \[2\sqrt {gR} .\frac{{\cos \theta }}{g}\]

3) \[2\sqrt {\frac{R}{g}} \]

4) \[\frac{{gR}}{{\sqrt {g\cos \theta } }}\]

Solution:

Explanation: Explanation

Motion under Gravity

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