63. Maximum torque is achieved when: A. The force is parallel to the wrench (pos

Question

63. Maximum torque is achieved when: A. The force is parallel to the wrench (position vector) B. The angle between the force and the wrench is 45 C. The force is perpendicular to the wrench. D. Maximum torque does not depend on the relative orientation of wrench and force. 64. If the moment arm (lever arm) of a force is increased by a factor of two, than the torques is increased by: A. A factor of ½ B. A factor of ¼ C. A factor of 1.o (not affected) D. A factor of 2 E. A factor of 4 65. The total acceleration a. for a point engaged in a circular motion characterized by the angular velocity o, angular acceleration a, and radius R is: A. Q3 66. All points of a CD are moving on a circular path. For such a motion, all points on the surface of the CD have the same A. Linear velocity B. linear acceleration C. linear momentum D. Arc travelled E. None of the above Answer E

Explanation / Answer

63)c. The force is perpendicular to wrench...... . 64)d. Torque. = arm lever × force. So torque increasedsincreased by a factor 2. .......

65)b. 66)e

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