16) Angular acceleration can be produced by: (a) Power (b) Torque (c) Pressure (d) 17) The minute hand of a large clock is 3.0 m long. What is its mean angular speed? (a) 1.4 x 10 rads- (b) 1.7 x 103 rads" (c) 5.2 x 103 rads" 18) In vertical circle, the minimum speed of the body at highest point is (a) v = √2gr (b) v = √3gr (c) √5gr 500 Kgm² 19) Moment of Inertia of 100 Kg sphere having radius 50 cm will be (a) 10 Kgm² (b) 5 Kgm² (c) Temperature (d) 1.0 x 10-1 rads-1 (d) 13 = = √gr (d) 2.5 Kgm² 20) A body rotates with a constant angular velocity of 100 rad/sec about a vertical axis. The torque (a) required to sustain this motion will be Zero Nm (b) 21) Torque acting on body determines its (a) Linear acceleration (b) 22) Force and torque are analogue of force (a) (b) Acceleration (c) Each other 23) An elevator moving upward such that it moves with accelerationa=2g, what will be the real weight of a 100 Nm (c) 200 Nm (d) 300 Nm Impulse (c) Angular Acceleration (d) Linear Momentum Pressure Weight (d) person of mass "m" in it? (a) 3mg (b) 2mg (c) mg/3 (d) mg 24) Time period of artificial satellite close to earth is given by (a) 2R (b) (c) Ζην пр (d) 1 R 1' 25) Which electromagnetic waves are used for the satellite communication system? (0) Radio waves (b) X-rays (c) Microwaves (d) Visible light 26) Dimensions of is same as (a) Frequency (b) Force 27) Weight of the body at the centre of earth is (a) Maximum (b) Minimum 28) A body of mass 10 Kg is freely falling. Its apparent weight is (b) (a) Zero 29) The ratio between orbital and escape velocity is (a) (b) 98 N 1 (c) (c) (c) Torque (d) Time Period (c) Zero (d) Infinite 10N (d) 980 N 1 (d) √2 30) When a hoop rolls on an inclined plane of certain height, then at bottom its (a) K.Erat K.Berans (b) K.Brot K.Etrans (c) K. Erat > K.Etrans 31) A sphere is rolling down on an inclined plane without slipping. The ratio of rotational K.E (a) 5 7 (b) 2 5 (c) 2 7 (d) (d) None of these to Total K.E is None of these 32) A disc without slipping rolls down a hill of height 10 m. If disc starts from rest at top of the hill, what is the speed at the bottom (a) 5.4 ms-¹ (b) 7.4 ms-1 33) A satellite moving round the earth constitutes (a) An inertial frame of (b) non inertial frame 34) Angular Momentum has same unit as reference (a) Impulse x Distance (c) 9.4 ms-1 (d) 11.4 ms¹ (c) neither inertial nor non inertial (d) both inertial and non- inertial Work (d) Velocity x Time (b) Power x Time (c) x Frequency 35) Trackers in cars use global positioning system which consists of how many satellites? (a) 12 (b) 24 (c) 6 (d) 18 Page 2 of

A disk 8.02 cm in radius rotates at a constant rate of 1 260 rev/min about its central axis. (a) Determine its angular speed. rad/s (b) Determine the tangential speed at a point 2.90 cm from its center. m/s (c) Determine the radial acceleration of a point on the rim. magnitude km/s² direction ---Select--- (d) Determine the total distance a point on the rim moves in 2.02 s. m

MY NOTES ASK A car initially traveling at 24.2 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.345 m? X rev (b) What is the angular speed of the wheels when the car has traveled half the total distance? X rad/s Submit Answer 10. [2/2 Points] DETAILS PREVIOUS ANSWERS SERCP11 7.4.P.020. MY NOTES ASK YC Human centrifuges are used to train military pilots and astronauts in preparation for hiigh-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up (88.2 m/s) without losing consciousness.

LAA-2 A solid disk of radius 15.0cm starts at rest and reaches a final angular speed of 1,200rev/min clockwise after turning thru a total of 80.0 revolutions. rotation a) Find the (constant) angular acceleration of the disk in units of radians and seconds. b) Find the final linear speed in m/s of point P on the rim of the disk. c) Find the magnitude of the tangential acceleration of point P on the rim of the disk. point P R=15.0cm d) Find the magnitude of the radial acceleration of point P on the rim of the disk. e) Sketch on your paper a figure like the one to the right and show arrows that represents atan and arad at point P. 9:47 PM 梦 0 arch 66°F Mostly cloudy 9/23/2021 Gup ISTRUCTION

5. The plate shown moves in the xy plane. Knowing that (V₂), = 12 in./s, (V₂), = -4 in./s, and (Vc), = - 24 in./s, determine (a) the angular velocity of the plane, (b) the velocity of the point B, and (c) the point of the plate with zero velocity 4 in. 2 in. O [VA = (VA)xi + (VA)yj 2 in. VB = (UB)¸i + (UB)yj -6 in.- vc = (vc),i + (Vc)yj x