Question

A ball of mass m is projected with velocity u making an angle q with the horizontal. What is its angular momentum at the highest point?

• A. $\frac{mu}{2g}$sin²qcosq
• B. $\frac{mu}{2g}$sin q cos²q
• C. $\frac{mu^{3}}{2g}$sinq cos²q
• D. $\frac{mu^{3}}{2g}$sin²qcosq

Answer 1

Answer: (D)

$\frac{mu^{3}}{2g}$sin²qcosq

Answer 2

J = mvr = m(u cos q) $\left( \frac { \mathrm { u } ^ { 2 } \sin ^ { 2 } \theta } { 2 \mathrm {~g} } \right)$