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## Homework Statement

a motor travelling 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 Equations

## The Attempt at a Solution

i know that when the motor is at the top of the track the formula should be Fn+m(v^2/r) = mg

but i just cant found v.