(1999) As shown above, a uniform disk is mounted to an axle and isfree to rotate without friction. A thin uniform rod is rigidlyattached to the disk so that it will rotate with the disk. A blockis attached to the end of the rod. Properties of the disk, rod, andblock are as follows. Disk: mass = 3m, radius = R, moment of inertia about centerID = 3/2 mR2 Rod: mass = m, length = 2R, moment of inertia about one endIR = 4/3 mR2 Block: mass = 2m The system is held in equilibrium with the rod at an angle0to the vertical, as shown above, by a horizontal string ofnegligible mass with one end attached to the disk and the other toa wall. Take m = 37 kg, R =0.63 m, and θ0 =58 degrees. (a) Determine the tension in the string. (b) Determine the following for the instant immediately after thestring is cut.

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SabadisO · Accepted Answer

(mass of block should be = 74g N and mass of rod should be 37gN) a) Taking moments about the centre of the disc, ∑τ=0 T(0.63)−3.7g(0.63sin⁡58)−7.4g(1.26sin⁡58)=0 b)i)torque = moment of inertia * angular acceleration angular acceleration =154⋅0.6332 mR2+43 mR2

(1999) As shown above, a uniform disk is mounted to an axle and isfree

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