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March 31, 2015

Homework Help: Physics

Posted by Abigail on Wednesday, July 28, 2010 at 10:18am.

Figure 10-42 shows a uniform disk that can rotate around its center like a merry-go-round. The disk has a radius of 2.00 cm and a mass of 20.0 grams and is initially at rest. Starting at time t = 0, two forces are to be applied tangentially to the rim as indicated, so that at time t = 1.25 s the disk has an angular velocity of 270 rad/s counterclockwise. Force F1 has a magnitude of 0.160 N. What magnitude is required of force F2?

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