Im having trouble understanding that if i have an equation for the motion of a particle how can i find out that a constant force is being acted upon the particle? Any help would be appreciated thank you.
Homework Statement
Homework Statement [/b]
Situation: bead sliding on a fristionless wire.
How large must the hieght be if the bead starting at rest is to have a velocity of 4.5m/s at the lower point? What angle will give the shortest time to achieve the correct velocity?
Homework...