MyQuestionIcon

1

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

Work-Energy Theorem

Two equal lum...

Question

Two equal lumps of putty are suspended side by side from two long strings so that they are just tuching. One is drawn aside so that its centre of gravity rises a vertical distance h. It is released and then collides inelastically with the other one. The vertical distance risen by the centre of gravity of the combination is

A

h

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

B

3 h / 4

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

C

h / 2

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

D

h / 4

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

Open in App

Solution

The correct option is D $h / 4$
velocity before collision $= \sqrt{2 g h}$
$m (\sqrt{2 g h}) + 0 = 2 m \sqrt{2 g h^{'}}$
$2 g h = 4 (2 g h^{'})$
$h^{'} = h / 4$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Two small balls

A

B

M

3 M

hang from the ceiling by strings of equal length. The ball

A

is drawn aside so that it is raised to a height

H

. It is then released and it collides with ball

B

. Select the correct answer(s)

Q. A non-uniform bar of weight W is suspended at rest by two strings of negligible weight as shown in Fig.7.39. The angles made by the strings with the vertical are 36.9° and 53.1° respectively. The bar is 2 m long. Calculate the distance d of the centre of gravity of the bar from its left end.

Q. A disc is hinged in a vertical plane about a point on its radius. What will be the distance of the hinge from the disc centre so that the hinge from the disc centre so that the period a small oscillations under gravity is minimum?

Q. A non-uniform bar of weight

W

is suspended at rest by two strings of negligible weight as shown in fig. The angles made by the strings with the vertical are

{36.9}^{o}

{53.1}^{o}

respectively. The bar is

2 m

long. Calculate the distance d of the center of gravity of the bar from its left end.

Q. Two bodies are held separated by

9.8 m

vertically one above the other. They are released simultaneously to fall freely under gravity. After

2 s

the relative distance between them is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Work Energy and Power

PHYSICS

Watch in App

explore_more_icon

Explore more

Work-Energy Theorem

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon