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The range of a projectile of weight $W$ is $R$. The average torque on the projectile between the initial and final positions $\mathrm{P}$ and $\mathrm{Q}$ about the point of projection is
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The correct answer is:
$\frac{W R}{2}$
Given, range of a projectile of weight $W=R$
The average torque on the projectile between the initial and final positions $\mathrm{P}$ and $\mathrm{Q}$ about the point of projection,
$$
\mathrm{T}=\frac{\mathrm{WR}}{2}
$$
The average torque on the projectile between the initial and final positions $\mathrm{P}$ and $\mathrm{Q}$ about the point of projection,
$$
\mathrm{T}=\frac{\mathrm{WR}}{2}
$$
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