Question

For a system of particles and rigid body,

• A. $\frac{d P}{d t}=F_{\text {ext }}$
• B. $\frac{ dL }{ dt }=\tau_{ ext }$
• C. $\frac{ dl }{ dt }=\tau_{ int }$
• D. Both (a) and (b)

Answer 1

Answer: (D)

For a system of particles, and rigid body
$\frac{ dP }{ dt }= F _{ext}, \frac{ dL }{ dt }=\tau_{ ext }$