Home
Class 12
PHYSICS
Two blocks A and B os masses 3m and m re...

Two blocks A and B os masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immdediately after the string is cut are respectively.

A

`g,(g)/(3)`

B

`(g)/(3),g`

C

`g,g`

D

`(g)/(3),(g)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
B

Before the string is cut
`kx=T+3mg` .......(1)
`T=mg` ........(2)

`implies kx= 4mg `
After the string is cut , T=0
`a=(kx-3mg)/(3m)`
`a=(4mg-3mg)/(3m)`
`a=(g)/(3) uarr `
Promotional Banner

Similar Questions

Explore conceptually related problems

Two block A and B of masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are resectively

Two block A and B of masses 3m and m respectively are connected by a massless and nextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are resectively

Two blocks A and B of same mass m attached with a light spring are suspended by a string as shown in fig. Find the acceleration of block A and B just after the string is cut.

A uniform rod of mass m and length l is suspended by means of two light inextensible strings as shown in figure. Tension in one string immediately after the other string is cut is

Two block of mass 4 kg and 5 kg attached a light spring are suspended by a string as shown in figure. Find acceleration of block 5 kg and 4 kg just after the string is cut.

Two blocks of masses m and M are connected by an inextensible light string . When a constant horizontal force acts on the block of mass M. The tension in the string is

Two blocks A and B of mass 2m and m respectively are connected to a massless spring of force constant K as shown in figure A and B are moving on the horizontal frcitionless surface with velocity v to right with underformed spring. If B collides with C elastically, then maximum compression of the spring will be

Two block of masses m1 and m2 are connected with a massless unstretched spring and placed over a plank moving with an acceleration 'a' as shown in figure. The coefficient of friction between the blocks and platform is mu

Two masses 6 kg and 4 kg are connected by massless flexible and inextensible string passing over massless and frictionless pulley.The acceleration of centre of mass is (g=10ms^2)

Two block of mass 2kg are connected by a massless ideal spring of spring contant K=10N//m . The upper block is suspended from roof by a light string A . The system shown is in equilibrium. The string A is now cut, the acceleration of upper block just after the string A is cut will be (g=10m//s^(2) .