Circular MotionHard
Question
A car is going on an overbridge of radius R, maintaining a constant speed. As the car is descending on the overbridge from point B to C, the normal force on it :
Options
A.increase
B.decreases
C.remains constant
D.first increases then decreases.
Solution
Let the car looses the contact at angle θ with vertical
mg cos θ − N =
⇒ N = mg cos θ −
During descending on overbridge θ is incerese. So cos θ is decrease therefore normal reaction is decrease.
mg cos θ − N =
⇒ N = mg cos θ − During descending on overbridge θ is incerese. So cos θ is decrease therefore normal reaction is decrease.
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