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

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1. A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________?

   A. Maximum B. Zero C. Equal to the weight of the stone D. Less than the weight of the stone...

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

   A. magnitude B. direction  C. both D. None of these Submitted by: Bareera Mahmood...

4. Centripetal force performs_______________?

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

5. If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is________________?

   A. At the highest point B. At the lowest point C. At any point during motion D. At the point where gravity is not acting...

6. A force applied on a body through the string is called_________?

   A. Weight B. Momentum C. Tension D. Torque Submitted by: hamza khan...

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. A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2

   A. 22N B. 16N C. 20N D. 4N Submitted by: Huzaifa Naseer...

9. The direction of the linear velocity of a body moving in a circle is______________?

   A. along the axis of rotation B. along the tangent C. directed towards the centre D. directed away from the centre...

10. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?

    A. πR B. 2π R C. 0 D. 4πR...