ass6 - Practice Problems 6 1. Four masses are connected by...

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Practice Problems 6 1 . Four masses are connected by 12.5 cm long, massless, rigid rods. If m A =110.0 g, m B =241.0 g, m C =205.0 g, and m D =211.0 g, what are the coordinates of the center of mass if the origin is located at mass A? Answer: 6.78e-02 m 7.27e-02 m ( x coordinate first followed by the y coordinate.) 2 .What is the moment of inertia about a diagonal axis that passes through masses B and D. Answer: 2.46e-03 kg*m^2 3 . An object's moment of inertia is 2.29 kg·m 2 . Its angular velocity is increasing at the rate of 5.06 rad/s per second. What is the torque on the object? Answer: 1.16e+01 N*m 4 . A 3.15 kg ball and a 6.30 kg ball are connected by a 1.31 m long rigid, massless rod. The rod is rotating clockwise about its center of mass at 24.2 rpm. What torque will bring the balls to a halt in 6.97 s? Answer: 1.31e+00 N*m 5 . A potter's wheel—a thick stone disk with a radius of 0.450 m and a mass of 128 kg—is freely rotating at 52.0 rev/min. The potter can stop the wheel in 5.95 s by pressing a wet
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ass6 - Practice Problems 6 1. Four masses are connected by...

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