Home
Class 11
PHYSICS
Two smooth blocks are placed at a smooth...

Two smooth blocks are placed at a smooth corner as shown. Both the blocks are having mass m. We apply a force F on the small block m. Block A presses the block B in the normal direction, due to which pressing force on vertical wall will increase, and presing force on the horizontal wall decreases. as we increase F. ( `theta = 37^@` with horizontal). As soon as the pressing force on the horizontal wall by block B becomes zero, it will loose the contact with the ground. If the value of F is further increased, the block B will accelerate in upward direction and simultaneously the block A will move toward right.

What is the minimum value of F, to lift block B from ground:

A

`(25)/(12)mg`

B

`(5)/(4)mg`

C

`(3)/(4)mg`

D

`(4)/(3)mg`

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE PRACTICE SHEET (ADVANECED) (Matrix Matching Type Questions)|1 Videos

  • NEWTONS LAWS OF MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE PRACTICE SHEET (ADVANECED) (More than One correct answer Type Questions)|3 Videos

  • MOTION IN A STRAIGHT LINE

    AAKASH SERIES|Exercise Questions for Descriptive Answers|7 Videos

  • OSCILLATION

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|12 Videos

Similar Questions

Explore conceptually related problems

A block of mass 1 kg is pressed against a wall by applying a horizontal force of 10N on the block. If the coefficient of friction between the block and the wall is 0.5, magnitude of the frictional force acting on the block is

A block of mass 1 kg is pressed against a wall by applying a horizontal force of 10 N on the block. If the coefficient of friction between the block and the wall is 0.5, magnitude of the frictional force acting on the block is

Knowledge Check

  • A block is placed on a smooth inclined plane at an angle theta to the horizontal. The acceleration must the plane be moved horizontally so that the block to fall freely is

    A
    `g tan q`
    B
    `g cot q`
    C
    `g sin q `
    D
    `g cos q `

  • A block is placed on a smooth inclined plane at an angle theta to the horizontal. The acceleration must the plane be moved horizontally so that the block to fall freely is

    A
    `g tan q`
    B
    `g cot q`
    C
    `g sin q `
    D
    `g cos q `

  • A horizontal force F is applied to a block of mass m on a smooth fixed inclined plane of inclination theta to the horizontal as shown in the figure. Resultant force on the block up the plane is:

    A
    `F sin theta + mg cos theta`
    B
    `F sin theta - mg cos theta`
    C
    `F sin theta + mg cos theta`
    D
    `F cos theta - mg sin theta`

    • Similar Questions

    Explore conceptually related problems

    Two blocks of masses M_1 and M_2 are placed in contact with each other on a frictionless horizontal surface. If a force F is applied on the block of mass M, what is the contact force between the two blocks?

    Block A is placed over the block B as shown in figure. Wedge is smooth and fixed. Force of friction on block A is:

    A block is placed on a smooth inclined plane at an angle 'theta' to the horizontal. The acceleration must the plane be moved horizontally so that the block to fall freely is

    Two wooden blocks of masses M and m are placed on a smooth horizontal surface as shown in figure. If a force P is applied to the system as shown in figure such that the mass m remains stationary with respect to block of mass M, then the magnitude of the force P is:

    Two wooden blocks of masses M and m are placed on a smooth horizontal surface as shown in figure. If a force P is applied to the system as shown in figure such that the mass m remains stationary with respect to block of mass M, then the magnitude of the force P is

    Home
    Profile