Answer:
τ = r x F, τ = dL / dt . second definition we have the body mass that could change, so it is a more general definition than the first one that only considers a body of constant mass
Explanation:
The moment is defined by
τ = r x F
Where x represents the vector product, in this case the body is assumed to be rigid, this means that the distance r is constant
Torque can also be defined by
τ = dL / dt
L = r x p
p = m v
τ = d (r x m v) / dt
τ = r x d (m v) dt
In this second definition we have the body mass that could change, so it is a more general definition than the first one that only considers a body of constant mass
