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.

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

a.   mass number from atomic number