Author: Study Clue

Two masses mm and 2m2m are at (0,0)(0,0) and (3,0)(3,0). The COM x-coordinate is A 2 B 1 C 3

For three particles, the centre of mass position is found using A A. Mass-weighted average B B. Simple average only

Two particles move with equal and opposite momenta. What is the centre-of-mass velocity A Zero B Maximum C Depends on

A system has no external force; two particles collide inside it. What stays constant A Total kinetic energy B Total

For two point masses on a line, the centre of mass lies closer to which one A Smaller mass B

A force along x is F(x)=kx2F(x)=kx2. Work done from x=0x=0 to x=ax=a is A ka2ka2 B 12ka321ka3 C 13ka331ka3 D

A 2 kg block on a smooth floor is pulled by 10 N at 37° above horizontal for 5 m.

A 5 N force acts along +x and moves a block by 3 m along +x on a smooth floor.

A force varies with position as F = ax along +x. The work done from x = 0 to x

A constant force F makes angle θ with displacement s. What is the work done by the force on the