Home
Class 12
PHYSICS
The given system is displacement by dist...

The given system is displacement by distance 'A' and released. Both the blocks (each of mass m) move together without relative slipping in the whole process. The magnetic of frictionless force between them at time 't' is

where `omega = sqrt((K)/(2m))`

A

`(KA)/(2)[cos omegat]`

B

`(KA)/(2)cos omegat`

C

`(KA)/(2)[sin omegat]`

D

`KA[cos omegat]`

Text Solution

Verified by Experts

The correct Answer is:
A
`a=omega^(2)x`
`a=(Kx)/(2m)=(KA)/(2m)cos omegat`
`f=ma=|(KA)/(2)cos omega t|`.
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.67|10 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.68|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.65|9 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise High Level Problems (HIP)|21 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

When distance between two given magnetic poles is halved, force between them becoems k times, where k=

A block P of mass m is placed on a smooth horizontal surface. A block Q of the same mass is placed over the block P and the coefficient of static friction between them is mu . A spring of spring constant K is attached to block Q. The blocks are displaced together to a distance A and released. The upper block oscillates without slipping over the lower block. The maximum frictional force between the block is:

(i) In the shown arrangement, both springs are relaxed. The coefficient of friction between m_(2) " and " m_(1) is mu . There is no friction between m_(1) and the horizontal surface. The blocks are displaced slightly and released. They move together without slipping on each other. (a) If the small displacement of blocks is x then find the magnitude of acceleration of m_(2) . What is time period of oscillations ? (b) Find the ratio (m_(1))/(m_(2)) so that the frictional force on m_(2) acts in the direction of its displacement from the mean position. (ii) Two small blocks of same mass m are connected to two identical springs as shown in fig. Both springs have stiffness K and they are in their natural length when the blocks are at point O. Both the blocks are pushed so that one of the springs get compressed by a distance a and the other by a//2 . Both the blocks are released from this position simultaneously. Find the time period of oscillations of the blocks if - (neglect the dimensions of the blocks) (a) Collisions between them are elastic. (b) Collisions between them are perfectly inelastic.

Two point particles of mass m and 2m are initially separated by a distance 4a. They are then released to become free to move. Find the velocities of both the particles when the distance between them reduces to a.

Two blocks of mass 10 kg and 2 kg are connected by an ideal spring of spring constant K = 800 N//m and the system is placed on a horizontal surface as shown. The coefficient of friction between 10 kg block and surface is 0.5 but friction is absent between 2 kg and the surface. Initially blocks are at rest and spring is relaxed. The 2 kg block is displaced to elongate the spring by 1 cm and is then released. (a) Will 10 kg block move subsequently? (b) Draw a graph representing variation of magnitude of frictional force on 10 kg block with time. Time t is measured from that instant when 2 kg block is released to move.

Four identical blocks each of mass m are linked by threads as shown. If the system moves with constant acceleration under the influence of force F, the tension T_(2) is

Both the blocks as shown in figure are given together a horizontal velocity towards right. The acceleration of the centre of mass of the system of block is (m_(A) = 2m_(B) = 2kg) .

A block P of mass m is placed on horizontal frictionless plane. A second block of same mass m is placed on it and is connected to a spring of spring constant k, the two blocks are pulled by distance A. Block Q oscillates without slipping. What is the maximum value of frictional force between the two blocks.

A 100 kg block is kept in the back of a truck moving with an acceleration of 2ms^(-2) There is no relative motion. What is the work done by frictional force on the block as truck is displaced by 2 m w.r.t. Ground

RESONANCE-DAILY PRACTICE PROBLEM-DPP No.66
  1. The figure shows a double slit experiment with P and Q as the slits. T...

    Text Solution

    |

  2. An astronomical telscope has an eyepiece of focal-length 5 cm. If the ...

    Text Solution

    |

  3. Block 'A' is placed ober the block 'B' as shown in the figure. Wedge i...

    Text Solution

    |

  4. The given system is displacement by distance 'A' and released. Both th...

    Text Solution

    |

  5. A 1m long wire having tension of 100 N and of linear mass density 0.01...

    Text Solution

    |

  6. A radioactive nucleus is being produced at a constant rate alpha per s...

    Text Solution

    |

  7. Which of the following dimensional formula is incorrect

    Text Solution

    |

  8. To manufacture a polyethlene film a wide band is pulled over rollers a...

    Text Solution

    |

  9. A solid cylinder of mass M and radius R rolls without slipping down an...

    Text Solution

    |

  10. A solid sphere and a solid cylinder having the same mass and radius, r...

    Text Solution

    |

  11. If you set up the seventh harmonic on a string fixed at both ends, how...

    Text Solution

    |

  12. A current loop consists of two identical semicircular parts each of ra...

    Text Solution

    |

  13. If a charged particle goes unaccelerated in a region containing electr...

    Text Solution

    |

  14. Calculate ratio of i(1) and (i(2)+i(3))

    Text Solution

    |

  15. A ray of light incident at an angle theta on a refracting face of a pr...

    Text Solution

    |

  16. A body with mass 5 kg is acted upon by a force vec(F) = (- 3 hat (i) +...

    Text Solution

    |

  17. A uniform cubical block of mass M is attached to a pulley. One end of ...

    Text Solution

    |

  18. The system is released from rest with spring intially in its natural l...

    Text Solution

    |

  19. Moment of inertia of an ellipse shaped wire of mass 'm', semimajor axi...

    Text Solution

    |

  20. A light rod of length 2 m is suspended from the ceiling horizontally b...

    Text Solution

    |