Evaluate the tension in the string
A 0.400 kg object is swung in a vertical circular path on a string 0.550 m long. If its speed is 3.60 m/s at the top of the circle, what is the tension in the string there?
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What is the force exerted by the seat on the child at the lowest point? (Neglect the mass of the seat.)
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A propeller drive shaft is to transmit 2500 hp at 75 rpm. It is to be made of AISI 1040 WQT 1300 steel. Use a design factor of 6 based on the yield strength in shear. The shaft is to be hollow, with the inside diameter equal to 0.80 times the outs
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