Motion of COM

Question 1

Formula for Velocity of Mass

Answer 1

(m1 v1 + m2 v2 + m3 v3 +…………….) / M

M = m1 + m2 ………..

Question 2

Formula for Acceleration of Centre Of Mass

Answer 2

(m1 a1 + m2 a2 + m3 a3 +………….)/ M

M = m1 + m2 ………..

Question 3

Force on COM Formula

Answer 3

F = F1 + F2 + F3 + …………….

Question 4

Linear Momentum of System of Particle Formula

Answer 4

P = m1 vv1 + m2 vv2 + ……………

vv -> Vector v

if net force = 0, P = constant

Question 5

Kinetic Energy of System of Particle Formula

Answer 5

KE = 0.5 m1 v1^2 + 0.5 m2 v2^2 + 0.5 m3 v3^2 + …….