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$$
\begin{array}{l}{\text { 15- 97. Determine the angular momentum } \mathrm{H}_{p} \text { of each of }} \\ {\text { the two particles about point } P \text { . }}\end{array}
$$

$$
v_{A}=8 \mathrm{m} / \mathrm{s} \ , \ m_A=3kg
$$

$$
v_{B}=6 \mathrm{m} / \mathrm{s}, \mathrm{m}_ \mathrm{B}=4 \mathrm{kg}
$$

$$
 H_{A)  p}=2.5 * 3*8\left(\frac{4}{5}\right)-7\left(3 * 8 * \frac{3}{5}\right)=-52.8 \mathrm{kg} . m^2/s
$$

$$
H_{B)p}=4*4*6* \sin30-8*4*6 \cos30=-118.28 kg.m^2/s
$$

 

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