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Sanonuke22
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So I took my physics final this morning, only to find out that I have a missing lab somehow, that happens to be required to pass. I took a look at the problems, and as embarrassed as I am to say it, I do not have any idea of how to work the problem. Problem is, I have to have it in by tomorrow morning. Any help would be appreciated!Lab Problems:
1. Given a 30 degree ramp with a frictional coefficient = 0.10 and a spring with k = 1000N/m
that pushes a 100 gram projectile up the ramp, how long of a distance must the spring be
compressed to launch the 100 gram projectile at a 100m/s velocity? Assume that the ramp is
just long enough for the spring to fully release its compressed energy at the end of the ramp.
2. What percentage of the energy was lost due to friction? In your opinion was it worth taking
it into account? Why or why not?
3. What if we had the same spring/ramp system but increased the frictional coefficient to 1.0,
and dropped the launch velocity to 20m/s? What would be the increase in frictional losses as
a percentage of total energy in the system?
What I've tried so far:
(1/2)kx^2 = sin(30)mgx + "mew"mgx + (1/2)mv^2
then used the quadratic formula to get x = 1.0006 or -0.9994
1. Given a 30 degree ramp with a frictional coefficient = 0.10 and a spring with k = 1000N/m
that pushes a 100 gram projectile up the ramp, how long of a distance must the spring be
compressed to launch the 100 gram projectile at a 100m/s velocity? Assume that the ramp is
just long enough for the spring to fully release its compressed energy at the end of the ramp.
2. What percentage of the energy was lost due to friction? In your opinion was it worth taking
it into account? Why or why not?
3. What if we had the same spring/ramp system but increased the frictional coefficient to 1.0,
and dropped the launch velocity to 20m/s? What would be the increase in frictional losses as
a percentage of total energy in the system?
What I've tried so far:
(1/2)kx^2 = sin(30)mgx + "mew"mgx + (1/2)mv^2
then used the quadratic formula to get x = 1.0006 or -0.9994
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