Two carts on horizontal straight rails are pushed apart by an explosion of a point charge Q placed between the carts. Suppose the coefficient of friction of the two are equal and 200kg cart travels a distance of 36m and stops. The distance covered by the cart weighing 300kg is
The correct option is C24m Since net external force on the system containing the two masses is zero, the position of centre of mass does not change. m1s1=m2s2 ∴300×s1=200×36 ∴s1=24m
Why this question?
"In the absence of an external force on a system, the position of centre of mass of a system is unaltered no matter how the internal forces act."