Question

The angular momentum ( is a vector product of position vector and linear momentum P. If
1-21 +31+5k and 31 - 41+5k
[02]​

Answer 1

Answer:

Here, the position vector r

= position of the point (2,-3,6) with respect to the point 2i - 5j + 3k

= ( 2i - 3j + 6k ) - ( 2i - 5j + 3k )

= 2j + 3k

Force F = i + 2j - 3k

So, Torque (T)

= r * F

=

= i (2*-3 - 2*3) - j (0*-3 - 1*3) + k (0*2 - 1*2)

= -12i + 3j - 2k

Required torque = -12i + 3j - 2k