Recent content by JOhnosn

When Fn = 0 means the ball is floating ? If fn<0 mean the ball is falling down? So in the question that "just able" means that the velocity of the motor is just enough to make the motor in the state of " floating" on the top ofthe track?

I really had no idea about this :frown:

Fn=0 ? But why?

Homework Statement a motor traveling at a constant speed is just able to completely go round a vertical circular track of radius 8m The total mass of motor is 210kg i)Compute the angular velocity at the top of the track ii)compute the maximum force on the track Homework EquationsThe Attempt...