Two cars A and B each of mass 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 B is __

Question

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. [2026]

Smart Achievers · Accepted Answer

(2)

$L = m . V_{rel} r_{⊥}$

$= 1000 \times (36 \times \frac{5}{18}) \times 10$

$= 10^{5} {kg m}^{2} / s$

Solution

Q.
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. [2026]

1 $3.6 \times 10^{5}$

2 $10^{5}$

3 $2 \times 10^{5}$

4 $3 \times 10^{5}$

Ans.
(2)

$L = m . V_{rel} r_{⊥}$

$= 1000 \times (36 \times \frac{5}{18}) \times 10$

$= 10^{5} {kg m}^{2} / s$

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Solution

Q. Two cars A and B each of mass 103 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. [2026]

1 3.6×105

2 105

3 2×105

4 3×105

Ans. (2) L=m.Vrel r⊥ =1000×(36×518)×10 =105 kg m2/s