Question

Torque and angular momentum full concept with derivation

Answer 1

L = r×p

Differentiate w.r.t.time

dl/dt=d(r×p)/dt

dl/dt = rdp/dt+drp/DT

(Product rule of differentiation)

dl/dt=r×f + v×p

dl/dt=torque+ v×p

= torque+v×mv

(P=MV)

=torque+0

(v×v=0)

dl/dt=torque