Question

Find the magnitude of the angular momentum of point B about point in kg mº 4 m Р 5 m 1.5 m 4 m B 4 kg L 11m 0 X 8 m/s 2 m 30° 6 m/s 3 kg. A

Answer 1

the magnitude of angular momentum is given by

here,

we will first calculate the magnitude of ( length of OB)

T=l(OB

using, Pythagorus law,

$r = \sqrt{4^2+1^2}= \sqrt{17}$

$\therefore L = 4 \times 6 \times \sqrt{17} = 24\sqrt{17} \approx 98.95 \ kg.m^2/s$

So, the magnitude of angular momentum of point B with respect to point O is 98.95 kg.m²s^-1