Question

State the S.I unit of:(1) Moment of couple (2) Rate of chane of momentum

Answer 1

Moment of couple:

It can be defined as the vector by which force is applied to the fixed suspension area. 

SI unit of moment of couple= N/m

Rate of change of momentum:

The rate of change of momentum of an object is directly proportional to the resultant force applied and is in the direction of the resultant force. The resultant force is equal to the rate of change of momentum.

SI unit of rate of change of momentum= kg m / s²