Rotational and Circular Motion MCQs for MDCAT Practice

Physics section, Rotational and Circular Motion chapter. Sample questions from past PMC papers.

1. Question 1
   The weight of a body of 15 kg mass placed in a spaceship orbiting the earth at a speed of 3000 m/sec at a height of 500 m will be:
   • A.176.5 N
   • B.240 N
   • C.122.5 N
   • D.Zero
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2. Question 2
   Angle swept by minute hand in one minute is:
   • A.6°
   • B.36°
   • C.18°
   • D.20°
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3. Question 3
   A stone of mass 0.5 kg tied with a string of length 1 m is moving in a circular path with a speed of 4 m/s. The tension acting on the string in newton is:
   • A.A) 2
   • B.C) 0.2
   • C.D) 0.8
   • D.B) 8
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4. Question 4
   Identify the increasing order of the angular velocities of the following: I. Earth rotating about its own axis II. Hour's hand of a clock III. Second's hand of a clock
   • A.I, II, III
   • B.III, I, II
   • C.II, III, I
   • D.III, II, I
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5. Question 5
   A point P is on a disk rotating with constant angular velocity. If the distance from the center is tripled, what happens to the ratio of linear velocity and angular velocity (v/ω)?
   • A.It remains the same
   • B.It triples
   • C.It is reduced to one-third
   • D.It increases by factor 9
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6. Question 6
   When a stone is whirled in a horizontal circle by means of a string, the centripetal force is supplied by:
   • A.Velocity of the stone
   • B.Mass of the stone
   • C.Tension in the string
   • D.Air friction
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7. Question 7
   In a body angular acceleration is produced by:
   • A.Net force
   • B.Power
   • C.Pressure
   • D.Net torque
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8. Question 8
   In case angular displacement one' radian is equal to:
   • A.60 degrees
   • B.57.3 degrees
   • C.360 degrees
   • D.90 degrees
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