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A skier plans to ski a smooth fixed hemisphere of radius R.He start from rest from a curved smooth surface of height (r/4).The angle theta at which he leaves the hemisphere: A)cos^-1 (2/3) b)cos^-1 (5/3) c)cos^-1 (5/6) d)cos^-1 (5/2) ans (c)

A skier plans to ski a smooth fixed hemisphere of radius R.He start from rest from a curved smooth surface of height (r/4).The angle theta at which he leaves the  hemisphere:
A)cos^-1 (2/3)
b)cos^-1 (5/3)
c)cos^-1 (5/6)
d)cos^-1 (5/2)

ans (c)


 


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Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
148 Points
12 years ago

Dear neeraj
it will leave the hemishphere when normal reaction by hemishpher will be zero

 

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