MyQuestionIcon

1

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

Block on a Block Problems

A body is han...

Question

A body is hanging from a rigid support by an inextensible string of length $l$ . It is struck inelastically by an identical body of mass m with horizontal velocity $v = (2 g L)$ , the tension in the string increases just after the striking by

A

m g

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

B

3 m g

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

C

2 m g

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

D

None of these

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

Open in App

Solution

The correct option is A $2 m g$
Conserving momentum,
Let velocity after striking be $v$ .
$2 m v = m (2 g L)$
$v = g l$
extra tension will be due to $\frac{2 m v^{2}}{L}$
which is equal to $2 m g$ .

Suggest Corrections

thumbs-up

0

Similar questions

Q. A body is hanging from a rigid support by an inextensible string of length

^{'} l^{'}

. It is struck inelastically by an identical body of mass m with horizontal velocity

v = \sqrt{2 g l}

, the tension in the string increases just after the striking by :

Q. A body is hanging from a rigid support by an inextensible string of length

l

. It is struck inelastically by an identical body of mass m moving with horizontal velocity

v = \sqrt{2 g l}

, the tension in the string increases just after striking by :

Q. A ball hanging from a support by an inextensible string of length

l

is strucked perfectly inelastically by an identical ball of mass

m

moving with horizontal velocity of

u = \sqrt{2 g l}

. Assuming the balls execute circular motion just after collision, find the tension in the string just after collision.

Q. A body of mass M is hanging by an inextensible string of mass m. If the free end of the string accelerates up with constant acceleration a, find the variation of tension in the string as a function of the distance measured from the mass M (bottom of the string).

Q. A body of mass m hangs at one end of a string of length l, the other end of which is fixed. It is given a horizontal velocity so that the string would just reach where it makes an angle of

60^{\circ}

with the vertical. The tension in the string at mean position is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Warming Up: Playing with Friction

PHYSICS

Watch in App

explore_more_icon

Explore more

Block on a Block Problems

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon