Three particles of masses $20 \, g$,$30 \, g$,and $50 \, g$ have velocities $10 \, \hat{i}$,$10 \, \hat{j}$,and $10 \, \hat{k}$ respectively. The velocity of the center of mass of these three particles is:

  • A
    $2 \, \hat{i} + 3 \, \hat{j} + 5 \, \hat{k}$
  • B
    $10 \, (\hat{i} + \hat{j} + \hat{k})$
  • C
    $20 \, \hat{i} + 30 \, \hat{j} + 5 \, \hat{k}$
  • D
    $2 \, \hat{i} + 30 \, \hat{j} + 50 \, \hat{k}$

Explore More

Similar Questions

$A$ rod of length $L$ has non-uniform linear mass density given by $\rho(x)=a+b\left(\frac{x}{L}\right)^{2}$,where $a$ and $b$ are constants and $0 \leq x \leq L$. The value of $x$ for the centre of mass of the rod is at

The centre of mass of two thin uniform rods of the same length $L$ but made of different materials and kept as shown in the figure can be,if the meeting point is the origin of coordinates:

Difficult
View Solution

What is the torque acting on the center of mass of an object due to the gravitational force?

What is a system of particles?

Five masses are placed in a plane as shown in the figure. The coordinates of the centre of mass are nearest to:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo