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shadowice
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[solved]Ballistic pendulum
A bullet of mass m = 0.024 kg is fired with a speed of vi = 97.00 m/s and hits a block of mass M = 2.61 kg supported by two massless strings. The bullet emerges from the right side of the block with a speed of vf = 48.50 m/s. Find the height to which the block rises.
m1= 0.024 kg
m2= 2.61 kg
vi = 97 m/s
vf = 48.5 m/s
h = unknown
Before+JA collision
m1v1+ m2V2 = P
Ki = 1/2m1v1^2+1/2m2vf^2
1/2mv^2= mgh
I know i need to use con of momentum before and just after bullet contact to find v. But that's where I am having problems at, I am not really sure how to set it up to find v
I had been doing 1/2m1v1^2+1/2m2vf^2 = 3182.6 then trying to set that = mgh but it gives me 120.
If i can find that v i know id need 1/2*m2*V = m2*g*h
then solve from h there if I am correct if someone could give me nudge into right direction would be great
Homework Statement
A bullet of mass m = 0.024 kg is fired with a speed of vi = 97.00 m/s and hits a block of mass M = 2.61 kg supported by two massless strings. The bullet emerges from the right side of the block with a speed of vf = 48.50 m/s. Find the height to which the block rises.
m1= 0.024 kg
m2= 2.61 kg
vi = 97 m/s
vf = 48.5 m/s
h = unknown
Homework Equations
Before+JA collision
m1v1+ m2V2 = P
Ki = 1/2m1v1^2+1/2m2vf^2
1/2mv^2= mgh
The Attempt at a Solution
I know i need to use con of momentum before and just after bullet contact to find v. But that's where I am having problems at, I am not really sure how to set it up to find v
I had been doing 1/2m1v1^2+1/2m2vf^2 = 3182.6 then trying to set that = mgh but it gives me 120.
If i can find that v i know id need 1/2*m2*V = m2*g*h
then solve from h there if I am correct if someone could give me nudge into right direction would be great
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