- #1
mybrohshi5
- 365
- 0
Homework Statement
The spring has a force constant of 355N/m. The spring is compressed 5.9 cm and the ball has a mass of 0.029kg. The gun is held horizontal. The barrel of the gun is 5.9 cm long so the ball leaves the barrel at the same point it loses contact with the spring. A resisting force of 6.1N acts on the ball as it moves along the barrel.
Find the speed of the ball as it leaves the barrel.
Homework Equations
Ki + Ui + Wf = Kf + Uf
The Attempt at a Solution
Ki = 0 and Uf = 0 so
1/2 kx2 + W = 1/2mv2
1/2 (355N/m)(.0592) - 6.1N(.059m) = 1/2(.029kg)(v2)
V = 4.21 m/s
Thank you for any help :)
Last edited: