Three people, each with a mass of 73.1 kg, are in a car with a mass of 1150 kg. An earthquake strikes. The driver manages to pull of the road and stop, as the vertical oscillations of the ground surface make the car bounce up and down on its suspension springs. When the frequency of the shaking is 1.80 Hz, the car exhibits a maximum amplitude of vibration. The earthquake ends and the three people leave the car as fast as they can. By what distance does the car‘s undamaged suspension lift the car‘s body as the people get out?_______ cm
ruin ceramic mold pouring plaster now: bitly.im/c9/did-i-ruin-my-ceramic-mold-by-pouring-plaster-into-it-is-there-a-way-to-get-it-out-now
Plaster to plaster molds are very common, and it should not be a problem if the proper release is used. Plaster molds are porous like a sponge. Potters soap or Vaseline can be used to fill the tiny holes so no liquid plaster can bond. I would recommend purchasing a new mold and sealing it with 3 coats of potters soap or one coat of Vaseline. Then every time you do a casting, just apply a thin coat to ensure a good release every time. The mold you have now is what we call in the industry: a waste mold. You can try prying it open with a flathead screwdriver and a hammer, but most likely the mold and the plaster you poured into it are hopelessly bonded.
Well, I don't know much about physics because I'm only in 7th grade. There's a lot of unneeded information. But, if it helps, 1319.3 is the total weight. They want you to find the maximum amount it could move if those circumstances were to happen. Please choose as best answer.
find the spring constant of the car's suspension. m total 1369.1 kg and use f 1/(2pi)√(k/m) (1.6*2pi)^2*1369.1 k k 138 357 N/m Now 3 persons with 3*73.1 kg are a force of 2151 N and the distance by which this force compresses the spring is 2151/138 357 0.01554 m The car will lift by 0.01554. m 1.55 cm when the 3 persons leave the car OG
