Q1: The unit of moments in M.K.S system, is

ANS:A - kgm

1. Kilogram (kg): Kilogram is the base unit of mass in the International System of Units (SI). Mass refers to the amount of matter in an object and is measured in kilograms.
2. Meter (m): Meter is the base unit of length in the SI system. It is the standard unit for measuring distance or displacement.

When we multiply kilogram by meter, we get the unit "kilogram-meter," which represents a quantity of work or energy. This combination signifies the force of one kilogram acting through a distance of one meter. In physics, work is defined as the product of force and displacement in the direction of the force. Therefore, when a force of one kilogram (which is roughly equivalent to the force due to Earth's gravity acting on a mass of one kilogram) is exerted through a distance of one meter, the work done is represented by one kilogram-meter. In engineering and physics, kilogram-meter (kgm) is commonly used to describe quantities such as torque, energy, or work. Torque, for instance, is often expressed in units of kilogram-meter, representing the product of a force (measured in kilograms) and the distance from the axis of rotation (measured in meters).