Question

part a
the torque exerted by a crowbar on an object increases with increased
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• force and leverage distance
• force
• rotational inertia
• energy of application

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Explanation:

Torque ($\tau$) is calculated by the formula $\tau = rF\sin\theta$, where $r$ is the leverage - distance (moment - arm), $F$ is the force applied, and $\theta$ is the angle between the force vector and the position vector from the pivot point. Increasing either the force $F$ or the leverage distance $r$ (assuming $\sin\theta$ remains non - zero) will increase the torque.

Answer:

A. force and leverage distance