Physics · 2013
JEE Main · 22 April 2013, Shift 1 · Q9
A tennis ball (treated as hollow spherical shell) starting from O rolls down a hill. At point A the ball becomes air borne leaving at an angle of 30°…
A tennis ball (treated as hollow spherical shell) starting from O rolls down a hill. At point A the ball becomes air borne leaving at an angle of $\displaystyle 30$° with the horizontal. The ball strikes the ground at B. What is the value of the distance AB ?
(Moment of inertia of a spherical shell of mass m and radius R about its diameter
$$\left.=\frac{2}{3} \mathrm{mR}^2\right)
$$
Official answer
(1)
1.$\displaystyle 87$ m
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.