PHYS 201 Midterm: PHYS 201 TAMU Fall 09 Exam 3 Solutions
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No partial credit will be given. (6 pts) 1. 1 ([evs (c) 4. 0 rev/s (d) 2. 0 rev/s (e) 1. 0 rev/s (f) none of the above (6 pts) 2. A uniform wheel with radius r = 0. 200 m is rotating at constant angular velocity about a stationary axis through its center. The moment of inertia of the wheel for this axis is 8. 00 kg m2. If a point on the rim of the wheel has linear speed 4. 00 m/s, what is the kinetic energy of the wheel? (a 3200 j. 1600j (c) 128 j (d) 2. 56 j (e) none of the above (6 pts) 3. A horizontal turntable is rotating at 4. 0 rev/s about a vertical frictionless axle at its center. The turntable has a radius of 0. 500 m and a moment of inertia of 20 kg. m2 for rotation about the axle. A bag of sand is dropped from a very small height onto the rim of the turntable.
