### Chapter 5 - Circular Motion - 5 1. The orbit of an artificial satellite is elliptical. a) True b) False 2. The Torque on a mass m moving in a circle of radius r with angular acceleration α is mr2α. a) False b) True 3. The moment of intertia is the angular analogue of mass. a) True b) False 4. The required tangential velocity of the orbiting satellite should be greater for larger radius. a) False b) True 5. The apparent weight of body in an elevator moving upward with acceleration "a" increases. a) False b) True 6. The spinning frequency of the orbiting spaceship to overcome the weightlessness is inversely proportional to inner radius of the spaceship. a) False b) True 7. The angular acceleration of a body undergoing uniform circular motion is constant. a) True b) False 8. Communication satellites appear to be stationary at a point due to their time period of 24 hours. a) False b) True 9. 1 Radian = 67.3o a) False b) True 10. The angular momentum of a particle of mass m is mrωwhen rotating in a circle of radius r with angular speed ω. a) False b) True
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