CameraIcon

SearchIcon

MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

COM of Center of Masses

Find the PE o...

Question

Find the PE of three objects of masses 1 kg, 2kg and 3 kg placed at the three vertices of anequilateral triangle of side 20 cm

A

50G J

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

B

-55G J

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

C

5G J

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

D

60G J

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

Open in App

Solution

The correct option is A -55G J
$∵ 20 c m / 100 = 0.2 m$
$P E = \frac{- G (1) (2)}{0.2} - \frac{G (2) (3)}{0.2} - \frac{G (1) (3)}{0.2}$
$= - 10 G - 30 G - 15 G$
$= - 55 G .$
Hence,
option $(B)$ is correct answer.

Suggest Corrections

thumbs-up

0

Similar questions

P E

of three objects of masses

1 k g, 2 k g a n d 3 k g

placed at the three vertices of an equilateral triangle of side

20 c m

Q. Three particle of masses

1 k g, 2 k g

3 k g

are placed at the vertices

A, B

C

an equilateral triangle

A B C

A

B

(0, 0) m

(1, 0) m

, the co-ordinates of their centre of mass are:

Q. Three masses 2 kg, 3 kg and 4 kg are lying at the corners of an equilateral triangle of side a. The

x

coordinate of the centre of mass is :

Q. Three particles of mass

1 k g, 2 k g

3 k g

are placed at the corners

A, B

C

respectively of an equilateral triangle

A B C

1 m

. Find the distance of their centre of mass from

A

Q. Three equal masses of

1 kg

each are placed at the vertices of an equilateral triangle

PQR

2 kg

is placed at the centroid

O

of the triangle which is at a distance of

\sqrt{2} m

from each of the vertices of the triangle. The net force (in Newton), acting on the mass of

2 kg

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Integrating Solids into the Picture

PHYSICS

Watch in App

explore_more_icon

Explore more

COM of Center of Masses

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon