- #1
psruler
- 40
- 0
Hi can anybody verify if I am using the correct formula,
Here is the problem first,
A bullet embeds itself in a pendulum bob, and the bullet+bob together swing up to some maximum height, which is easy to measure. IF the bullet has a mass of 15g, the bob's mass is 4kg, and the combination reaches a height of 23cm after impact, what was the speed of the bullet just before impact?
Do I use this formula:
v= (mass of bullet/ mass of pendulum bob + mass of bullet)(2(9.80m/s^2)(h))^1/2
THANKS AGAIN!
Here is the problem first,
A bullet embeds itself in a pendulum bob, and the bullet+bob together swing up to some maximum height, which is easy to measure. IF the bullet has a mass of 15g, the bob's mass is 4kg, and the combination reaches a height of 23cm after impact, what was the speed of the bullet just before impact?
Do I use this formula:
v= (mass of bullet/ mass of pendulum bob + mass of bullet)(2(9.80m/s^2)(h))^1/2
THANKS AGAIN!