- #1
devanlevin
a wooden tree trunk with A mass M=9.98kg is hung from a tree by a cord who's mass is irrelevant, it is hit by a bullet with a mass of m=0.02kg and is traveling at v1=500m/s. the bullet hits the trunk and immediately gets stuck in it, what is the maximum height that the trunk and the bullet in it will get to?
mv1=(M+m)u
u=1m/s
u being their velocity after the collision
from here using conservation of energy
0.5(M+m)u^2=(M+m)gh
h=(u^2)/(2g)
h=0.05m(using g=10m/s2)
now how do i find out how long it took the trunk to get to the height?
mv1=(M+m)u
u=1m/s
u being their velocity after the collision
from here using conservation of energy
0.5(M+m)u^2=(M+m)gh
h=(u^2)/(2g)
h=0.05m(using g=10m/s2)
now how do i find out how long it took the trunk to get to the height?