Question

A particle is moving along line y = 4x with a speed 10 m/s
If the mass of the particle is 2 kg then its angular
momentum about the point (1,4) is
10 kg ml/s
20 kg m/s
Zero
5 kg ml/s​

Answer 1

Given:

Equation of the line along which the particle moves: y=4x

The speed of the particle = 10 m/s

Mass of the particle = 2 kg

To find:

Angular momentum at type point (1,4).

Solution:

Angular momentum L = mvr

Where m = mass of particle

v = it's velocity

r = distance from the point where we need to find the angular momentum.

Since the point (1,4) lies on the line y=4x therefore its distance from the line will be 0.

Hence the angular momentum L = m*v*0 = 0

The angular momentum is zero. Option C is correct.