wiz-icon
MyQuestionIcon
MyQuestionIcon
11
You visited us 11 times! Enjoying our articles? Unlock Full Access!
Question

Two spheres of mass 2 kg and 6 kg are moving with velocities 4 m/s and 8 m/s away from each other along the same line. The ball of mass 2 kg is moving towards left. The velocity of the center of mass is

A
4 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
7 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
5 m/s
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
3 m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 5 m/s
Given, mass m1=2 kg & m2=6 kg
Taking left to be negative direction.
Velocity of masses, v1=4 m/s
& v2=8 m/s

Thus, we have velocity of center of mass
Vcm=m1v1+m2v2m1+m2=2(4)+6(8)2+6=408=5 m/s

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon