Kinematics Question 300

Question: The position vectors of radius are 2i^+j^+k^ and 2i^3j^+k^ while those of linear momentum are 2i^+3j^k^. Then the angular momentuM is [BHU 1997]

Options:

A) 8

B) 83

C) 38

D) 192

Show Answer

Answer:

Correct Answer: A

Solution:

Area of parallelogram =A×B

=(i^+2j^+3k^)×(3i^2j^+k^)

=|i^j^k^123321|

=(8)i^+(8)j^(8)k^ Magnitude =64+64+64 = 83



NCERT Chapter Video Solution

Dual Pane