Angle between the string and the vertical
A mass of 3.700 kg is suspended from a 1.410 m long string. It revolves in a horizontal circle. The tangential speed of the mass is 2.632 m/s. Calculate the angle between the string and the vertical (in degrees).
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How much work did the movers do (horizontally) pushing a 44.0-kg crate 10.1m across a rough floor without acceleration, if the effective coefficient of friction was 0.60?
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