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A bicycle chain is wrapped around a rear sprocket (r = 0.047 m) and a front sprocket (r = 0.13 m). The chain moves with a speed of 1.0 m/s around the sprockets, while the bike moves at a constant velocity. Find the magnitude of the acceleration of a chain link that is in contact with each of the...

12.0 m cables attached to a vert? A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0 m cables attached to a vertical rotating pole, (? = 60.5°) Suppose the total mass of a chair and its occupant is 250 kg. (a) Determine the tension in the cable attached to the...

brakes? (a) apply the brakes very hard so that wheels stop rotating. (b) apply the brakes hard enough to just prevent slipping (c) pump the brakes( press and release) (d) shut the engine off and not apply brakes. I know the answer is (b). Please give a solution of it so as to why (b) is the answer.

The U.S. army stated that the Roswell crash was just a weather balloon. In the Needles crash, few witnesses saw a turquoise flame crashing down towards land.