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HW 5-2-solutions

# HW 5-2-solutions - madrid(tmm2353 HW 5-2 Antoniewicz(56445...

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madrid (tmm2353) – HW 5-2 – Antoniewicz – (56445) 2 the Earth on the rider is downward ( y direc- tion). At the top of the hill, the net force on the rider is in the downward direction, toward the center of the circle. To feel weightless, the force by the seat on the rider must be zero at the top of the hill: vector F net = vector F seat + vector F grav ( 0 , m | vectorv | 2 R , 0 ) = ( 0 , m g, 0 ) m | vectorv | 2 R = m g ⇒ | vectorv | = radicalbig g R .
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