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  4. A motorcycle is going on an over bridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it

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Q. A motorcycle is going on an over bridge of radius $R$. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it

Chhattisgarh PMTChhattisgarh PMT 2004

Solution:

Here, $R=m g \cos \theta-\frac{m v^{2}}{R}$
It is clear from the figure that a decreases with height,
so that $\cos \theta$ increases and as a result of which normal force $N$ increases.

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