Homework Statement
The ball launcher in a pinball machine has a spring that
has a force constant of 1.20 N/cm The surface
on which the ball moves is inclined 10.0° with respect
to the horizontal. If the spring is initially compressed
5.00 cm, find the launching speed of a 100-g ball...
I checked the solution manual and for some reason they extracted the 4 outside the integral 4 ∫(x^2)/2 0 to 5
Is the 4 a constant ? is that why they pulled it out
Homework Statement
A force F = (4xi + 3yj) N acts on an object as the object moves in the x direction from the origin to x = 5.0m. Find the work W= Integral F x dr done by the force on the object
Homework Equations
W= ∫Fx dr
The Attempt at a Solution
∫4xi 2x^2 0 to 5