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Problem Solving

An aeroplane ...

Question

An aeroplane is moving in a circular path with a speed of $200 m / s$ . If the mass of the plane is $1500 k g$ , and the force acting on it is equal to $120 k N$ , then find the radius of the circle of motion.

500 m

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1 m

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1 k m

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10 k m

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Solution

The correct option is A $500 m$
Given:
speed = $200 m / s$
radius = $? m$
mass = $1500 k g$
Force = $120000 N$ = $\frac{m v^{2}}{r}$
$\Rightarrow$ 120000 = $\frac{1500 \times 200^{2}}{x}$
$\Rightarrow$ $x$ = 500 $m$

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