[" A force "vec F=alphavec j+3hat j+6hat k" is acting at a point "ddot r=2hat i-6hat j-12hat k" .The value of "alpha],[" for which angular momentum about origin is conserved is "]

A force vec F = prop hat i + 3 hat j + 6 hat k is acting at a point vec r = 2 hat i - 6 hat j - 12 hat k . The value of prop for which angular momentum about origin is conserved is.

A force vec F = prop hat i + 3 hat j + 6 hat k is acting at a point vec r = 2 hat i - 6 hat j - 12 hat k . The value of prop for which angular momentum about origin is conserved is.

vecF = a hat i + 3hat j+ 6 hat k and vec r = 2hat i-6hat j -12 hat k . The value of a for which the angular momentum is conserved is

vecF = a hat i + 3hat j+ 6 hat k and vec r = 2hat i-6hat j -12 hat k . The value of a for which the angular momentum is conserved is

[[[hat i+4hat j+6hat k,2hat i+ahat j+3hat k,hat i+2hat j-3hat k]=18 then value of a equals to:

If vec a = 6hat i - hat j+ 2hat k and vec b =hat i- 3hat j - 2 hat k , find vec a - vec b .

Vectors vec A=hat i+hat j-2hat k and vec B=3hat i+3hat j-6hat k are

The lines vec r=(hat i+hat j+hat k)alpha+3hat k and vec r=(hat i-2hat j+hat k)beta+3hat k

The torque of a force vec(F)=-2hat(i)+2hat(j)+3hat(k) acting on a point vec(r )=hat(i)-2hat(j)+hat(k) about origin will be