Center of MassMedium
Question
The diagram shows the velocity - time graph for two masses R and S that collided elastically. Which of the following statements is true?
I. R and S moved in the same direction after the collision.
II. The velocities of R and S were equal at the mid time of the collision.
III. The mass of R was greater than mass of S.
I. R and S moved in the same direction after the collision.
II. The velocities of R and S were equal at the mid time of the collision.
III. The mass of R was greater than mass of S.
Options
A.I only
B.II only
C.I and II only
D.I, II and III
Solution
I. Since velocity of both R and S is positive they will move in same direction.
II. At mid point velocities of R and S are same.
III. Change velocity of R is small compair to change in velocity of S. But change in momentum is same for both in magnitude. Hence mass of R should be greater than S.
Hence all three are correct.
II. At mid point velocities of R and S are same.
III. Change velocity of R is small compair to change in velocity of S. But change in momentum is same for both in magnitude. Hence mass of R should be greater than S.
Hence all three are correct.
Create a free account to view solution
View Solution FreeMore Center of Mass Questions
Two persons of masses 40 kg and 60 kg are sitting at the midpoint of a 12 m long boat (140 kg) standing still in water. ...Two blocks of mass 3 kg and 6 kg respectively are placed on a smooth horizontal surface. They are connected by a light s...A ring of mass m and a particle of same mass fixed on a disc of same mass such that centre of mass of the system lies at...Centre of mass of two thin uniform rods of same length but made up of different materials & kept as shown, can be, i...Two men ′A′ and ′B′ are standing on a plank. ′B′ is at the middle of the plank and &...