Why must I suck at Physics?
The ball launcher in a pinball machine has a spring that has a force constant of 1.2 N/cm. The surface on which the ball moves is inclined 10.0 degrees with the horizontal. If the sprint is initially compressed 5.00 cm, find the launching speed of a 100g ball when the plunger is released. Friction and the mass of the plunger are negligible.
So, I was assuming I am to apply conservation of energy; that gets me an answer close to what the back of the book says, but it's an entire .1 m/s off. :\
Another question might be on its way. D:
The ball launcher in a pinball machine has a spring that has a force constant of 1.2 N/cm. The surface on which the ball moves is inclined 10.0 degrees with the horizontal. If the sprint is initially compressed 5.00 cm, find the launching speed of a 100g ball when the plunger is released. Friction and the mass of the plunger are negligible.
So, I was assuming I am to apply conservation of energy; that gets me an answer close to what the back of the book says, but it's an entire .1 m/s off. :\
Another question might be on its way. D:

