madison.e. Class Management I Help Homework 5 Begin Date: 2/15/2018 120000 AM-Du

Question

madison.e. Class Management I Help Homework 5 Begin Date: 2/15/2018 120000 AM-Due Date: 3/72018 115900 PMEnd Date: 3/7201s 11:5900 PM (696) Problem 10: A scooter is traveling at a constant speed v when it encounters a circular hill ofradius r= 380 m. The driver and scooter together have mass m-128 kg. Ctheexpertta.com 50% Part (a) what speed in m s does the scooter have if the driver feels weightlessness (Le, has an apparent weight of zero) at the top of the hill? Grade Summary Deductions 0% Potential 100 Submissions Attempts remaining (00 per attempt) detailed tiew con asin acos 4 5 6 atan0 acotan0sinh0 coshO tanh cotarh0 Degrees ORadians SuboritHit I give up Hints:2 deduction per hint. Hists remainitng a Feedback:o deduction par feedback 50% Part (b) If the driver is traveling at the speed a driver and the scooter in Newtons at the top of the hill? boreand encounters a hill mitharadia2 a 15 he apparent eight of both the

Explanation / Answer

Here ,

r = 380 m

m = 128 Kg

part A ) let the speed is v

for the weightlessness at the top

m * g = m * v^2/r

9.8 - v^2/380 = 0

v = 61 m/s

the speed of the driver must be 61 m/s

b) at the top

apparent weight = m * g - m * v^2/(2r)

apparent weight = 128 * (9.8 - 61^2/(2 * 380))

apparent weight = 627 N

the apparent weight is 627 N

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