Home
Class 12
PHYSICS
The Fig. shows a string of equally place...

The Fig. shows a string of equally placed beads of mass `m`, separated by distance `d`. The beads are free to slide without friction on a thin wire. A constant force F act on the first bead initially at rest till it makes collision with the second bead. The second bead then collides with the third and so on. Supposed that all collisions are elastic,

A

a) Speed of first bead immediately before and immediately after its collision with the second bead is `sqrt((2Fd)/(m))` and zero respectively.

B

b) Speed of first bead immediately before and immediately after its collision with the second bead is `sqrt((2Fd)/(m))and(1)/(2)sqrt((2Fd)/(m))` respectively.

C

c) Speed of second bead immediately after its collision with the third bead is zero.

D

d) The average speed of the first bead during its motion is `(1)/(2)sqrt((2Fd)/(m)).`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    ALLEN|Exercise MATHS|14 Videos

  • TEST PAPERS

    ALLEN|Exercise part-2 physic|48 Videos

  • TEST PAPER 4

    ALLEN|Exercise PHYSICS|44 Videos

  • UNIT & DIMENSIONS, BASIC MATHS AND VECTOR

    ALLEN|Exercise Exercise (J-A)|7 Videos

Similar Questions

Explore conceptually related problems

A rigid insulated wire frame in the form of a right-angled triangle ABC is set in a vertical plane as shown in fig. two beads of equal masses m each and carrying charges q_(1) and q_(2) are connected by a cord of length l and can slide without friction on the wires. Cinsidering the case when the beads are stationary, determine (i) the angel alpha (ii) the tension in the cord, and (iii) The normal recation on teh beads. If the cord is now cut, what are the value of the charges for which the beads continue to remain stationary?

A piece of wire is bent in the shape of a parabola y=kx^(2) (y-axis vertical) with a bead of mass m on it. The bead can slide on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated parallel to the x-axis with a constant acceleration a. The distance of the new equilibrium position of the bead, where the bead can stay at rest with respect to the wire, from the y-axis is:

A piece of wire is bent in the shape of a parabola y=kx^(2) (y-axis vertical) with a bead of mass m on it. The bead can slide on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated parallel to the x-axis with a constant acceleration a. The distance of the new equilibrium position of the bead, where the bead can stay at rest with respect to the wire, from the y-axis is:

A piece of wire is bent in the shape of a parabola y=kx^(2) (y-axis vertical) with a bead of mass m on it. The bead can slide on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated parallel to the x-axis with a constant acceleration a. The distance of the new equilibrium position of the bead, where the bead can stay at rest with respect to the wire, from the y-axis is:

A piece of wire is bent in the shape of a parabola y = kx^2 (y axis vertical) with a bead of mass mon it. The bead can slide on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated paralle to the x-axis with a constant acceleration a. The distance of the the new equilibrium position of the bead. Find the x-coordinate where the bead can stay at rest with respect to the wire ?

A bead of mass m and diameter d is sliding back and forth with velocity v on a wire held between two right walls of length L. Assume that th ecollisions with the wall are perfectly elastic and ther is no friction. The average force that the bouncing bead exerts on the one of the walls is :_

One end of a light spring of natural length d and spring constant k is fixed on a rigid wall and the other is attached to a smooth ring of mass m which can slide without friction on a vertical rod fixed at a distance d from the wall. Initially the spring makes an angle of 37^(@) with the horizontal as shown in fig. When the system is released from rest, find the speed of the ring when the spring becomes horizontal. [ sin 37^(@) = 3/5]

A horizontal frictionless rod is threaded through a bead of mass m . The length of the cart is L and the radius of the bead, r , is very small in comparison with L(r lt lt L) . Initially at ( t = 0 ) the bead is at the right edge of the cart. The can is struck and as a result, it moves with velocity v_(0) towards right. When the bead collides with the cart's walls, the collisions are always completely elastic. Velocity of bead just after the first collision is

A horizontal frictionless rod is threaded through a bead of mass m . The length of the cart is L and the radius of the bead, r , is very small in comparison with L(r lt lt L) . Initially at ( t = 0 ) the bead is at the right edge of the cart. The can is struck and as a result, it moves with velocity v_(0) towards right. When the bead collides with the cart's walls, the collisions are always completely elastic. What is the velocity of the cart just after the first collision?

A horizontal frictionless rod is threaded through a bead of mass m . The length of the cart is L and the radius of the bead, r , is very small in comparison with L(r lt lt L) . Initially at ( t = 0 ) the bead is at the right edge of the cart. The can is struck and as a result, it moves with velocity v_(0) towards right. When the bead collides with the cart's walls, the collisions are always completely elastic. The first collision takes place at time ti and the second collision takes place at time t_(2) . Find t_(2)-t_(1)

ALLEN-TEST PAPERS-PHYSICS
  1. A block of mass m is being pulled up a rough incline by an agent deliv...

    Text Solution

    |

  2. In the question number 66, the charge on capacitors C(1)and C(4) are

    Text Solution

    |

  3. In the given LCR series ciruit reading of voltmenter is 120V. The read...

    Text Solution

    |

  4. A uniform cylinder of mass M lies on a fixed plane inclined at an angl...

    Text Solution

    |

  5. When interference of light takes place

    Text Solution

    |

  6. The magnetic field in a certain cylindrical region is changing with ti...

    Text Solution

    |

  7. In the given figure balls A&B are released simultaneously , when str...

    Text Solution

    |

  8. A narrow pipe of length 2m is closed at one end. The velocity of sound...

    Text Solution

    |

  9. A very thin sheet of plastic having refractive index mu=1.5 covers one...

    Text Solution

    |

  10. The Fig. shows a string of equally placed beads of mass m, separated b...

    Text Solution

    |

  11. As shown in diagram initial charge on capacitor is zreo . Now switch ...

    Text Solution

    |

  12. Three musicians experiment with the Doppler affect . Musician A rides ...

    Text Solution

    |

  13. A wave equation which gives the displacement along the y- direction is...

    Text Solution

    |

  14. On an inclined plane making an angle theta with the horizontal plane, ...

    Text Solution

    |

  15. On an inclined plane making an angle theta with the horizontal plane, ...

    Text Solution

    |

  16. In the given circuit switch S(2) is Kept closed and S(1) is kept open ...

    Text Solution

    |

  17. In the given circuit switch S(2) is Kept closed and S(1) is kept open ...

    Text Solution

    |