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Questions  

A bead of mass m is located on a parabolic wire with its axis vertical and vertex directed downward as in figure and whose equation is x2 = ay. If the coefficient of friction is µ , the highest distance above the x-axis at which the particle will be in equilibrium is

a
µa
b
µ2a
c
(1/4) µ2a
d
(1/2) µ2a

detailed solution

Correct option is C

For sliding not to occur when

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A uniform sphere of weight W and radius 3 m is being held by a string of length 2m.attached to a frictionless wall as shown in the t figure. The tension in the string will be:


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