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Q1. A rock is fixed to a 3m long spring. Rock is revolving at 2 circles per sec. what is the frequency period angular velocity centripetal acceleration.

Q2. What minimum horsepower must a motor have to be capable to drag a 290 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50?

Q3. Two people are carrying a uniform wooden board that is 3.00 m long and weighs 160 N. If one person applies an upward force equal to 60 N at one end, at what point does the other person lift? Begin with a free body diagram of the board.

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