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3-2.Motion in Plane
easy
A motorcycle is going on an overbridge of radius $R$. The driver maintains a constant speed. As the motorcycle is ascending on the overbridge, the normal forces on it is
AIncreasing
BDecreases
CReamins the same
DFluctuates
Solution
$\mathrm{F}_{\mathrm{c}}=\mathrm{N}-\mathrm{mg} \cos \theta$
$\mathrm{N}=\mathrm{mg} \cos \theta-\frac{\mathrm{mv}^{2}}{\mathrm{R}}$
as $\theta \downarrow \cos \theta \uparrow \mathrm{N} \uparrow$
$\mathrm{N}=\mathrm{mg} \cos \theta-\frac{\mathrm{mv}^{2}}{\mathrm{R}}$
as $\theta \downarrow \cos \theta \uparrow \mathrm{N} \uparrow$
Standard 11
Physics
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