JEE Mains · Physics · STD 11 - 6. system of particles and rotational motion
Two cars A and B each of mass \(10^3 kg\) are moving on parallel tracks separated by a distance of 10 m , in same direction with speeds \(72 km / h\) and \(36 km / h\). The magnitude of angular momentum of car \(A\) with respect to car \(B\) is _________ J.s.
- A \( 3.6\times10^{5} \)
- B \( 10^{5} \)
- C \( 3\times10^{5} \)
- D \( 2\times10^{5} \)
Answer & Solution
Correct Answer
(B) \( 10^{5} \)
Step-by-step Solution
Detailed explanation
\( L=m.V_{rel}r_{\perp} \) \( =1000\times(36\times\frac{5}{18})\times10 \) \( =10^{5}kg~m^{2}/s \)
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