Physics

Problem

A solid uniform disk of mass

4.0\,\text{kg}

and radius

0.30\,\text{m}

has two identical point masses, each of mass

0.50\,\text{kg}

, rigidly attached to its rim on opposite sides. The assembly is released from rest and rolls without slipping down a ramp that is

1.2\,\text{m}

high. What is the speed of the center of mass of the assembly at the bottom of the ramp? a)

4.9\,\text{m/s}

3.4\,\text{m/s}

3.8\,\text{m/s}

4.1\,\text{m/s}