Forces

The moment of the couple formed by the forces and acting at the points (9, -1, 2) and (3, -2, 1) respectively, is

In Force current analogy, stiffness constant K is analogous to__

If three forces acting on a rigid body are in equilibrium, then they must:

A truss ABC loaded at B with a force of 10 kN as shown in the figure. The force in the member AC is:

The dimensional formula of force is:

The general form of a central force is represented by (C = constant) known as Inverse Power law.
A. The force represented by above equation will be attractive if C < 0.
B. The force represented by above equation will repulsive if C < 0.
C. The force represented by above equation will be repulsive if C > 0.
D. The force represented by above equation will be attractive if C > 0.
Choose the correct answer from the options given below.

Gravitational force between two masses and separated by a distance r is
A. central force
B. non-central force
C. attractive force
D. repulsive force
E. directly proportional to the distance between and
Choose the correct answer from the options given below.