A 100-kg motor and generator set is mounted on rubber pads that deflect 3 mm under the static weight of the set. The rated speed of the motor is 1800 rpm, and at that speed the set vibrates with an amplitude of 0.05 mm. What would be the amplitude of motion if the motor generator set is mounted on a 300-kg block of concreate, which is then mounted on the same rubber pads

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?