Home
Class 11
PHYSICS
Two blocks A and B each of mass m are pl...

Two blocks A and B each of mass m are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on blocks A and B, respectively, as shown in fig. Block A does not slide on block B. Then then the normal reaction acting between the two blocks is (assume no friction between the blocks)

A

`F`

B

`F//2`

C

`(F)/(sqrt(3))`

D

`3F`

Text Solution

Verified by Experts

The correct Answer is:
D
Acceleration of two mass system is `a=(F)/(2m)` leftward
`FBD` of block `A`
`N cos 60^(@)-F=ma=(mF)/(2m)` solving `N=3F`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 26|8 Videos

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 27|3 Videos

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise TRUE/FALSE|2 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Exercise|54 Videos

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Advanced Level Problems|9 Videos

Similar Questions

Explore conceptually related problems

Two blocks 'A' and 'B' each of mass 'm' are placed on a smooth horizontal surface . Two horizontal force F and 2F are applied on the blocks A and B , respectively , as shown in figure . The block A does not slide on block B . The normal reaction acting between the two blocks is

Two block of masses m_(1) and m_(2) are placed side by side on a smooth horizontal surface as shown in fig. A horizontal force F is applied on the block . (a) Find the acceleration of each block. (b) Find the normal reaction between the two blocks.

Knowledge Check

  • Two blocks of masses 1 kg and 2 kg are placed in contact on a smooth horizontal surface as shown in fig. A horizontal force of 6N is applied d(a) on a 1-kg block. Find the force of interaction of the blocks. .

    A
    `4N`
    B
    `5N`
    C
    `10N`
    D
    none

  • Two blocks of equal mass 2 kg are placed on a rough horizontally surfaces as shown and a force F is applied on the upper block . The system is initially at rest . Find acceleration of the lower block in m// s^(2) .

    A
    `3 m//s^(2)`
    B
    `5 m// s^(2)`
    C
    Zero
    D
    none of these

  • A block of unknown mass is at rest on a rough, horizontal surface. A horizontal force F is applied to the block. The graph in the figure shows the acceleration of the block with respect to the applied force. The mass of the block is

    A
    `1.0kg`
    B
    `0.1kg`
    C
    `2.0kg`
    D
    `0.2kg`

    • Similar Questions

    Explore conceptually related problems

    Two blocks of masses 4kg and 2kg are placed side on a smooth horizontal surface as shown in the figure. A horizontal force of 20N is applied on 4kg block. Find (a) the acceleration of each block. (b) the normal reaction between two blocks.

    A block is placed on a rough horizontal plane. Three horizontalforces are applied on the block as shown in the figure. If the block is in equilibrium, find the friction force acting on the block.

    In fig Block m_(2) is loaded on block m_(1) . If there is no relative sliding between the block and the inclined plane is smooth , find the friction force between the block

    Two blocks of masses m and 2m are placed on a smooth horizontal surface as shown in the figure. Find the acceleration of each block and normal reaction between two blocks if a horizontal force F_(0) is applied on (a) m and (b) 2m

    Two blocks A and B of masses m and M are attached with ideal string and pulley, and placed on smooth horizontal surface. Force F is applied horizontally as shown in figure. Find the ratio of the acceleration of A to that of B.

    Home
    Profile