Home
Class 11
PHYSICS
The elevator shown in fig. is descending...

The elevator shown in fig. is descending with an acceleration of `2ms^(-2)`. The mass of the block `A=0.5kg`. Find the force (in Newton) exerted by block A on block B.

Text Solution

Verified by Experts

The correct Answer is:
4
Let A apply a force R on B

Then B also applies an opposite force R on A as shown in fig.
For A: `mg-R=ma`
`implies R=m(g-a)=0.5[10-2]=4N`,
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION 1

    CENGAGE PHYSICS|Exercise Linked Comperhension|46 Videos

  • MISCELLANEOUS VOLUME 2

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|10 Videos

  • NEWTON'S LAWS OF MOTION 2

    CENGAGE PHYSICS|Exercise Integer type|1 Videos

Similar Questions

Explore conceptually related problems

The elevator shown in figure is descending with an acceleration of 2m/s^2 . The mass of the block A is 0.5 kg. What force is exerted by the block A on the block B?

.A block is kept on the floor of an elevator at rest.The elevator starts descending with an acceleration of 12m/s^(2) .Find the displacement of the block during the first 0*2safter the start.Take g=10m/s^(2)

Knowledge Check

  • The elevator shown in figure is descending, with an acceleration of 2 m//s^(2) . The mass of block A is 0.5 kg. the force exerted by block A on block B is (mass of block B is 1 kg)

    A
    2N
    B
    8N
    C
    6N
    D
    4N

  • The elevator shown in fig. is descending with an acceleration of 2 m//s^(2) . The mass of block A is 0.5 kg. The force exerted by the block A on the block B is

    A
    2N
    B
    4N
    C
    6N
    D
    8N

  • A horizontal force F, pushes on a 4 kg block it pushes against a 2 kg block (B) as shown. The block of an acceleration of 3 m//s^(2) to the right. There is as between the blocks and the surface on which the what is the net force B exerts on A?

    A
    6 N to the right
    B
    12 N to the right
    C
    6 N to the left
    D
    12 N to the left

    • Similar Questions

    Explore conceptually related problems

    Inclined plane is moved towards right with an acceleration of 5 ms^(-2) as shown in figure. Find force in newton which block of mass 5 kg exerts on the incline plane. ( All surface are smooth)

    Three block of masses 1kg,4 kg and 2 kg are placed on a smooth horizontal plane as shown in figure. Find (a) the acceleration of the system, (b) the normal force between 1kg block and 4 kg block, ( c) the net force on 2kg block

    A block of mass 5kg is falling downwards in air with an acceleration of 2ms^(-2) air resistance is present. The force applied by block on the earth will be (g=10m/s^(2))

    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.

    Two blocks A and B are connected by as string as shown in figure. Friction coefficient of the incline plane and block is 0.5 . The mass of the block A is 5 kg . If minimum & maximum values of masses of the block B for which the block remains in equilibrium are m_(1) & m_(2) then find value of (m_(2) - m_(1)) .

    Home
    Profile