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  4. A collar B of mass 2 kg is constrained to move along a horizontal smooth and fixed circular track of radius 5 m. The spring lying in the plane of the circular track and having spring constant 200 Nm -1 is undeformed when the collar is at A. If the collar starts from rest at B, the normal reaction exerted by the track on the collar when it passes through A is

Q. A collar of mass is constrained to move along a horizontal smooth and fixed circular track of radius . The spring lying in the plane of the circular track and having spring constant is undeformed when the collar is at . If the collar starts from rest at , the normal reaction exerted by the track on the collar when it passes through is

Work, Energy and Power Report Error

Solution:


Initial extension will be equal to .
Initial energy
Reaching , we get

From at ,
we get

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