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A particle of mass `m` is released from a height `H` on a smooth curved surface which ends into a vertical loop of radius `R`, as shown. Choose the correct alernative(s) if `H=2R`. A. `H =(3R)/(2)`B. `H = 5R`C. `H =(5R)/(2)`D. None of these |
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Answer» Correct Answer - A Force on body at `A = sqrt2 mg` `implies F = sqrt(F_(g)^(2)) + F_(c)^(2)) implies F_( c) = mg = mv^(2)//R` `implies v^(2) = gR` Using energy conserrvation `mgH = mv^(2)//2 + mgR = 5mgR//2` `H = 3R//2` |
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