A particle starts from the point $(0,8)$ metre and moves with uniform velocity of $\vec{v}=3 \hat{i} \,m / s$. What is the angular momentum of the particle after $5 \,s$ about origin is ........... $kg m ^2 / s$ (mass of particle is $1 \,kg$ )?
$-12 \hat{k}$
$-24 \hat{k}$
$-32 \hat{k}$
$-36 \hat{k}$
Why $\vec v \times \vec p = 0$ for rotating particle ?
A particle is moving along a straight line with increasing speed. Its angular momentum about a fixed point on this line ............
$A$ uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of $20^o$ to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above. What is the direction of the rod's angular momentum vector (calculated about its lower end)?
A particle is moving along a straight line with increasing speed. Its angular momentum about a fixed point on this line
Explain Cartesian components of angular momentum of a particle.