A system of three point particles of equal masses 45 gm are initially connected by three rods of negligible mass to an axis of rotation perpendicular to the plane of the particles as shown in the figure-1. (a) What is the moment of inertia of the system of three particles?

(b) If the massless rods are replaced by three rods of equal masses of 65 gm keeping

their lengths unchanged, what is the moment of inertia of the system now?

(c) If the systems rotate at 4.75 rev/s, what are the systems rotational kinetic

energies?

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.