Question

Part Al Select the best answer of the following multiple choice questions (32 Points), just circle your choices Question 1. A meter stick is pivoted at the 0.50-m line. A 6.0 kg object is hung from the 0.15-m line. Where should a 10.0 kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)? A) 0.06-m line B) 0.24-m line C) 0.46-m line D) 0.71-m line E) A 5.0 kg object cannot be placed anywhere on the meter stick to result in equilibrium in this system. Question 2. The wheels of a bicycle roll without slipping on a horizontal road The bicycle is moving due north at a constant velocity. What is the direction of the angular momentum of the wheels? a) South b) West c) East d) North e) None of these Question 3: A metalic hoop is rolling along a flat, horizontal plane. The center of mass of the hoop is moving toward the south at constant velocity. Which one of the following statements concerning the translational and rotational kinetic energies of the hoop is true? a) The rotational kinetic energy is less than the translational kinetic energy. b The rotational kinetic energy is greater than the translational kinetic energy. c) The translational kinetic energy is equal to the rotational kinetic energy. d) The sum of the translational and rotational kinetic energies equals the gravitational potential energy of the cylinder. e) The sum of the translational and rotational kinetic energies equals zero joules. Question 4. Two points are located on a rigid wheel that is rotating with a decreasing angular velocity about a fixed axis. Point A is located on the rim of the wheel and point B is halfway between the rim and the axis. Which one of the following statements is true concerning this situation? a) The angular velocity at point A is greater than that of point B. b) Both points have the same centripetal acceleration. c) Both points have the same tangential acceleration. d) Each second, point A turns through a greater angle than point B. e) None of the above

Answer 1

Let Lokg obects it at X dulence oe DEm leno . 6x0.35=loxX0.50) Singght hand humb ul cohceli isCuat Diecha angur momentun Translahon al K-e = mv2 Rolahanal Ke - LTw2= my2 - m2 solaHonal ce Translahonal Ke eqal None the above