Home
Class 12
PHYSICS
Choose the correct option: A small blo...

Choose the correct option:
A small block of mass 'm' is placed on bigger block of mass `M_(1)` which is placed on a frictionless horizontal surface. The two blocks are given equal speed `u_(1)` but opposite directions, as shown in the figure. After sometime, it is observed that both blocks are moving in the direction of motion of the lower block, with a speed greater than `(u)/(2)`. It can be concluded that -

A

`M gt 3m`

B

`3M lt m`

C

`m gt 2M`

D

M,m can have any value such that `M gt m`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

Blockes A and B are resting on a smooth horizontal surface given equal speeds of 2ms^(-1) in opposite sense as shown in the figure. At t=0, the position of blocks are shown, then the coordinates of center of mass t=3s will be

A small block B of mass m_2 is placed on another block A of mass m_1 A constant horizontal force F is applied to the block A. All the surfaces are assumed to be frictionless. Find the acceleration of center of mass of the system

Two identical blocks each of mass 1kg are joined together with a compressed spring. When the system is released the two blocks appear to be moving with unequal speeds in the opposite directions as shown in fig. Choose the correct statement -

A block of mass m is placed on another block of mass M which itself is lying on a horizontal surface .The coefficient of friction between two blocks is mu_(1) and that between the block of mass M and horizontal surfece is mu_(2) What maximum horizontal force can be applied to the lower block move without separation?

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_1 , what is the contact force between the two blocks?

A small block of mass 2 kg is placed on a bigger block of mass 4 kg which is attached to horizontal spring of spring constant K = 500 N //m as shown in figure, coefficient of friction between block is 0.2 .Maximum amplitude of system so that there is no relative slipping between blocks.

A wedge shaped block A' of mass M is at rest on a smooth horizontal surface. A small block 'B' of mass 'm' placed at the top edge of inclined plane of length 'l' as shown in the figure. By the time, the block 'B' reaches the bottom end, the wedge A moves a distance of:

A block of mass 2 kg is plased on a smooth horizontal surface. Two forces F_(1)=20 N and F_(2)=5 N start acting on the block in opposite directions as shown. If block gets displaced by 5 m in the direction of net force then work done by F_(2) is :-

A block of mass M is placed on the top of a bigger block of mass 10 M as shown in figure. All the surfaces are frictionless. The system is released from rest, then the distance moved by the bigger block at the instant the smaller block reaches the ground :

A block of mass m is placed on a smooth wedge of mass M, as shown in the figure . Just after placiing block m over wedge M.