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Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion

A flexible drive belt runs over a frictionless pulley as shown in figure. The pulley is rotating freely about the vertical axis passing through the centre O of the pulley. The vertical axis is fixed on the horizontal smooth surface. The mass per unit length of the drive belt is 1 ~kg / m and the tension in the drive belt 8 N. The speed of the drive belt is 2 ~m / s . Find the net normal force applied by the belt on t

Correct answer

8

Step-by-step solution

2 T d 2 -d N= R d v^2 R ( is linear mass density of belt) T d -d N= v^2 d so total normal = _ - 2 ^ + 2 dN = _ 2 ^ + 2 T d - v ^2 _ - 2 ^ + 2 ~d N =8 newton

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