A vibration isolation block is to be installed in a laboratory so that the vibration form adjacent factory operations will not disturb certain experiments. If the weight of the isolation block is 800 lb and it vibrates vertically with an amplitude of 0.03 in at 20 Hz, determine the stiffness of the isolation system required to reduce the vertical-motion amplitude to 0.005 in. Neglect damping.

when it gains or loses electrons

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.