You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Ropes

Two blocks A ...

Question

Two blocks $A$ and $B$ of masses $m$ and $2 m$ respectively are held at rest such that the spring is at its natural length. Find out the accelerations of blocks $A$ and $B$ respectively just after release (pulley, string and spring are massless).

g

↓,

g

↓

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\frac{g}{3} ↓, \frac{g}{3} ↓

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

g

↓,

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $g$ ↓, $g$ ↓
Spring is at natural length, means spring is unstretched. So, tension in the string is zero.
While the masses are released, there is no tension in the string and only gravity force is acting on it.
Hence, both blocks have equal acceleration (acceleration of gravity).

Acceleration of block $A = g$ (downward)
Acceleration of block $B = g$ (downward)

Suggest Corrections

Similar questions

Two blocks $A$ and $B$ of masses $m$ and $2 m$ respectively are held at rest such that the spring is at its natural length. Find out the accelerations of blocks $A$ and $B$ respectively just after release (pulley, string and spring are massless).

Q. Two blocks

A

and

B

of masses

m

and

2 m

respectively are held at rest such that the spring is in natural length. Find out the accelerations of both the blocks just after release:

Q. Two blocks

A

and

B

of masses

m

and

2 m

respectively are held at rest such that the spring is in natural length. Find out the accelerations of both the blocks just after release:

Q. In the figure a block

^{'} A^{'}

of mass

^{'} m^{'}

is attached at one end of a light spring and the other end of the spring is connected to another block

^{'} B^{'}

of mass

2 m

through a light string.

^{'} A^{'}

is held and

B

is in static equilibrium. Now

A

is released. The acceleration of

A

just after that instant is

^{'} a^{'}

. In the next case,

B

is held and

A

is in static equilibrium. Now when

B

is released, its acceleration immediately after the release is

^{'} b^{'}

. The value of

a / b

is: (Pulley, string and the spring are massless)

Join BYJU'S Learning Program

Two blocks A and B of masses m and 2m respectively are held at rest such that the spring is at its natural length. Find out the accelerations of blocks A and B respectively just after release (pulley, string and spring are massless).

Two blocks $A$ and $B$ of masses $m$ and $2 m$ respectively are held at rest such that the spring is at its natural length. Find out the accelerations of blocks $A$ and $B$ respectively just after release (pulley, string and spring are massless).