Center of MassHard
Question
Two particles of equal mass have initial velocities 2î ms-1 and 2ĵ ms-1. First particle has a constant acceleration (î − ĵ) ms-2 while the acceleration of the second particle is always zero. The centre of mass of the two particles moves in
Options
A.Circle
B.Circle
C.Ellipse
D.Straight line
Solution
vcm = 
∴ vcm =
acm =
vcm has same direction as of acm
∴ straight line.
∴ vcm =
acm =
vcm has same direction as of acm
∴ straight line.
Create a free account to view solution
View Solution FreeMore Center of Mass Questions
A uniform rope of linear mass density λ and length l is coiled on a smooth horizontal surface. One end is pulled up...The centre of mass of two masses m & m′ moves by a distance when mass m is moved by distance x and m′ is kep...There are two particles of same mass. If one of the particles is at rest always and the other has an acceleration . Than...A particle of mass ′m′ and velocity ′′ collides oblique elastically with a stationary particle o...A shell of mass 100 kg is fired horizontally from a cannon with a mass of 5 × 103 kg. The kinetic energy of the she...