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# The Action of Forces and Torques on Rigid Objects

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In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, which can rotate about a vertical axis through its center. Then, two people push perpendicularly on the car, one at each end. The turn table is rotated one-half of a revolution to turn the car around. If the length of the car is 9.20 m and each person pushes with a 185-N force, what is the magnitude of the net torque applied to the car?

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• BEng, Allahabad University, India
• MSc , Pune University, India
• PhD (IP), Pune University, India
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