The centripetal acceleration produced in a rotating body is commonly due to change on_________of body?

Related Mcqs:

1. When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?

   A. Mass of a body
   B. Velocity of body
   C. The tension in the string
   D. Centripetal acceleration

2. When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?

   A. mV/r2
   B. mV/r
   C. mV2/r
   D. mV2/r2

3. When the body moves with terminal velocity the acceleration in the body become_____________?

   A. 0
   B. Maximum
   C. Variable
   D. Infinite

4. Centripetal force performs_______________?

   A. Maximum work
   B. Minimum work
   C. Negative work
   D. No work

5. A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?

   A. 9.8 N
   B. 19.6 N
   C. 129.4 N
   D. 39.2 N

6. If a lift is going up with acceleration, the apparent weight of a body is:

   A. More than the true weight
   B. More or less the true weight
   C. Less than the true weight
   D. Equal to the true weight

   Submitted by: Naveed Tahir

7. What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ?

   A. 1N
   B. 10N
   C. 2N
   D. 100N

8. The value of acceleration due to gravity is minimum on which of these planets?

   A. Mars
   B. Jupiter
   C. Mercury
   D. Neptune

   Submitted by: Abid Hussain

9. In case of planets the necessary acceleration is provided by______________?

   A. Gravitational force
   B. Frictional force
   C. Coulomb force
   D. Centripetal force

10. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?

    A. mg
    B. mg – ma
    C. mg + ma
    D. mg – ma