Solution Found!
Figure 9-55 shows a two-ended rocket that is initially
Chapter , Problem 41(choose chapter or problem)
Figure 9-55 shows a two-ended rocket that is initially stationary on a frictionless floor, with its center at the origin of an x axis.The rocket consists of a central block C (of mass M ! 6.00 kg) and blocks L and R (each of mass m ! 2.00 kg) on the left and right sides. Small explosions can shoot either of the side blocks away from block C and along the x axis. Here is the sequence: (1) At time t ! 0, block L is shot to the left with a speed of 3.00 m/s relative to the velocity that the explosion gives the rest of the rocket. (2) Next, at time t ! 0.80 s, block R is shot to the right with a speed of 3.00 m/s relative to the velocity that block C then has. At t ! 2.80 s, what are (a) the velocity of block C and (b) the position of its center?
Questions & Answers
QUESTION:
Figure 9-55 shows a two-ended rocket that is initially stationary on a frictionless floor, with its center at the origin of an x axis.The rocket consists of a central block C (of mass M ! 6.00 kg) and blocks L and R (each of mass m ! 2.00 kg) on the left and right sides. Small explosions can shoot either of the side blocks away from block C and along the x axis. Here is the sequence: (1) At time t ! 0, block L is shot to the left with a speed of 3.00 m/s relative to the velocity that the explosion gives the rest of the rocket. (2) Next, at time t ! 0.80 s, block R is shot to the right with a speed of 3.00 m/s relative to the velocity that block C then has. At t ! 2.80 s, what are (a) the velocity of block C and (b) the position of its center?
ANSWER:Step 1 of 4 a) The net momentum is same before and after the collision, Initially the rocket is stationary so the initial momentum is zero. Implies, When block-L is shot to the left with speed relative to the initial velocity, the momentum is, Implies, Given, mass of block-L, Mass of block-R, Mass of block-C, So,