PROBLEM 10.44 A cord is wrapped around a drum of radius athat is pinned at A. The constant of the spring is 3 kN/m, and the spring is unstretched when 0.θ=Knowing that 150 mma=and neglecting the mass of the drum, determine the value of corresponding to equilibrium when a downward force Pof magnitude 48 N is applied to the end of the cord. SOLUTION First note 90β+=°90 αβα+⇒=Length of cord unwound for rotation sa∴=Now ( )01cos, the distance moves down for rotation yaO=−POyys=+( )1cosis the distance
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