A particle of mass m, attached to the end of string of length l is released from
Channel: Doubtnut
Date: 2020-03-29

A particle of mass m, attached to the end of string of length l is released from the initial position A as shown in the figures. The particle moves in a vertical circular path about O. When it is vetically below O, the string makes contact with nail N placed directly below O at distance h and rotat es around it. If the particle just complete the vertical circle about N,then