Home
Class 12
PHYSICS
STATEMENT-1: One end of a string of leng...

STATEMENT-1: One end of a string of length r is tied to a stone of mass m and the other end to a small pivot on a frictionless vertical board. The stone is whirled in a vertical circle with the pivot as the centre. The minimum speed the stone must have, when it is at the topmost point on the circle, so that the string does not slack is `sqrt( gR)`.
because
STATEMENT-2: At the topmost point on the circle, the centripetal force is provided partly by tension in the string and partly by the weight of the stone.

A

Statement-1 is true, Statement-2 is True, Statement -2 is a correct explanation for Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement -2 is NOT a correct explanation for Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement - 1 is False, Statement -2 is True.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    FIITJEE|Exercise ASSIGNMENT PROBLEMS ( OBJECTIVE) (LEVEL-II)|19 Videos

  • WORK, ENERGY AND POWER

    FIITJEE|Exercise COMPREHENSIONS ( Comprehension-II)|5 Videos

  • WORK, ENERGY AND POWER

    FIITJEE|Exercise ASSIGNMENT PROBLEMS ( OBJECTIVE) (LEVEL-I)|36 Videos

  • TEST PAPERS

    FIITJEE|Exercise PHYSICS|747 Videos

Similar Questions

Explore conceptually related problems

One end of a string of length 1.5 m is tied to a stone of mass 0.4 kg and the other end to a small pivot on a smooth vertical board. What is the minimum speed of the stone required at its lower most point so that the string does not slack at any point in its motion along the vertical circle ?

A stone is fastened to one end of a string and is whirled in a verticla circle of radius R. Find the minimum speed the stone can have at the highest point of the circle.

A stone is tied to a weightless string and revolved in a vertical circle of radius 5 m . What should be the minimum speed of the stone at the highest point of the circle so that the string does not slack ? What should be the speed of the stone at the lowest point of vertical circle ? Take g = 9.8 ms^(2) .

A stone of mass 0.2 kg is tied to one end of a string of length 80 cm. Holding the other and, the stone is whiled into a vertical circle. The minimum speed of the stone and tension at the lowest point of circular path so that it just comletes the circle are

A stone is whirled in a vertical circle at the end of a rope of length 0.5m . The velocities of the stone at lowest and highest points to just complete the circle are [Take ,g =9.8ms^(-2)]

A stone of mass m tied to a string of length l is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will move

A stone is tied at one end of a 5 m long string and whirled in a vertical circle.The minimum speed required to just cross the topmost position is

A stone of mass 0.2 kg is tied to one end of a string of length 80cm Holding the other end, the stone is wirled into a vertical circle. What is the minimum speed of the stone at the lowest point so that it just completes the circle What is the tension in the string at the lowest point of the circular path ? . (g =10^(-2)) .

A 2 kg stone at the end of a string 1 m long is whirled in a vertical circle at a constant speed. The speed of the stone is 4 m//sec . The tension in the string will be 52 N , when the stone is

IF a stone is tied to one end of the string and whirled in verticle circle, then the tension in the string at the lowest point is equal to

Knowledge Check

  • A stone is fastened to one end of a string and is whirled in a verticla circle of radius R. Find the minimum speed the stone can have at the highest point of the circle.

    A
    `v=sqrt(3Rg)`
    B
    `v=sqrt(Rg)`
    C
    `v=sqrt(4Rg)`
    D
    `v=sqrt(7Rg)`

  • A stone of mass 0.2 kg is tied to one end of a string of length 80 cm. Holding the other and, the stone is whiled into a vertical circle. The minimum speed of the stone and tension at the lowest point of circular path so that it just comletes the circle are

    A
    `5ms^(-1),10N`
    B
    `6.32ms^(-1),12N`
    C
    `6.32ms^(-1),10N`
    D
    `2ms^(-1),10N`

  • A stone is whirled in a vertical circle at the end of a rope of length 0.5m . The velocities of the stone at lowest and highest points to just complete the circle are [Take ,g =9.8ms^(-2)]

    A
    `4.949and 2.213ms^(-1)`
    B
    `5.921and 3.312ms^(-1)`
    C
    `1.235and 2.312ms^(-1)`
    D
    None of these