Sara is designing a new ramp for launching ping-pong balls. The ping-pong ball rolls without slipping down a ramp of incline 70° and then up a ramp at 45°, which launches it into the air. The ping-pong ball needs to be launched a horizontal distance of 1 meter across a flat table. How high above the surface of the table should the ball be placed in order to launch this far? The ping-pong balls are hollow spheres with mass m = 2.7 g and radius R = 20

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.