Can u please solve with explanation so I can understand and learn ..ooo VIRGIN 9

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Can u please solve with explanation so I can understand and learn ..ooo VIRGIN 9:56 PM 10% Online.mun.ca Written Assignment4 A car begins from rest at the top of a hill of height H What is the minimum height H for the car to maintain contact with the track as it goes around a loop-de-loop with radius R? Question to be submitted With a neat, complete solution. Pretend this is a test question Written on a word processing document or on paper (legibly? and scanned. Upload to Brightspace (Assessments> Assignments Dropbox By the 1.00 on Friday 0l03/2018. If you get stuck: Try the Help Centre (C 3071) or a peer study group BUT no copying!

Explanation / Answer

to maintain the contact

the speed at the top is v = sqrt(R*g)

Now using law of conservation of energy

Total energy at the top of a hill = Total energy at the top of a loop

m*g*H = (0.5*m*v^2)+(m*g*2R)

v^2 = g*R

then

m*g*H = (0.5*m*R*g) + (m*g*2R)

H = (0.5*R)+(2R)

H = 2.5R

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