NetBanking  How to Find your Customer ID? If you are using a net banking facility, you will be very familiar with the Customer ID or User ID. The Customer ID is mentioned in the welcome letter and cheque book. It is also mentioned on the first page of Passbook and Account Statement.

What is D'Alembert's Principle? For a system of mass of particles, the sum of the difference of the force acting on the system and the time derivatives of the momenta is zero when projected onto any virtual displacement.

Applications of D'Alembert's Principle\n\n D'Alembert's principle is based on the virtual work principle as well as inertial forces. The following are examples of D'Alembert's principle in action: Free fall of a mass under gravity. Theorem of Parallel axis.