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

This preview shows pages 1–2. Sign up to view the full content.

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

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

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

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online