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______________?

Related Mcqs:

1. 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

2. 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

3. A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is____________________?

   A. (F1+F2) (121+122)
   B. (F1+F2) (122-112)
   C. (F1+F2) (12-11)
   D. (F1+F2) (12-11)

4. A stone is thrown upward from the top of a 59.4m high cliff with an upward velocity component of 19.6m/s how long is the stone in the air?

   A. 4.00 s
   B. 5.00 s
   C. 6.00 s
   D. 7.00 s

   Submitted by: Maryum

5. 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

6. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?

   A. 4 rad. S-1
   B. 5 rad. S-1
   C. 1.6 rad. S-1
   D. 2.8 ms-1

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 force applied on a body through the string is called_________?

   A. Weight
   B. Momentum
   C. Tension
   D. Torque

   Submitted by: hamza khan

9. The speed of stationary waves in a stretched string are independent of___________________?

   A. Number of loops
   B. Tension in the string
   C. Point where string is plucked
   D. both A and C

10. The first overtone of a stretched string of given length is 320 Hz. The first harmonic is_________?

    A. 320 Hz
    B. 640 Hz
    C. 160 Hz
    D. 480 Hz

    Submitted by: Tauseef Ali