1.

A bob tied to an ideal string of length l is released from the horizonatal position shown. A peg P whose height is adjustable, can arrest the free swing of the pendulum, as shown in figure {:(,"Column-1",,"Column-2"),("(A)",underset("remaining taut throughout the swing")"For what range of y will the string wind up on the peg",,(P) (2l)/5 lt y lt (2l)/3),("(B)",underset("pendulum become projectile")"For what range of y will the",,(Q)0 lt y lt (2l)/5),("(C)",underset("mechanical energy always remain conserved")"For what value of y will",,(R)(2l)/5 lt y lt l),(,,,(S) l/3 lt y lt (2l)/3):}

Answer»

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ANSWER :A - Q; B - P, R; C - Q


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