(adsbygoogle = window.adsbygoogle || []).push({}); --------------------------------------------------------------------------2) a small container of water is placed on a carousel inside a microwave oven, at a radius of 12.0 cm from the center. The turntable rotates steadily, turning through one revolution in each 7.25s. What angle does the water surface make with the horizontal?

3) a person stands on a scale in the elevator. as the elevator starts, the scale has a constant reading of 591N. as the elevator later stops, the scale reading is 391N. assume the magnitude of the acceleration is the same starting and stopping, and determine:

(a) the weight of the person (b) the person's mass (c) the acceleration of the elevator

for question #3) above with the elevator, every says to apply newtons second law for BOTH cases ( i dont understand what the case(s) are)

is it: 591 = m(g+a) and 391= m(g-a) ???

is that how your suppose to find the weight? I really dont understand what i'm trying to be solving for.

as for question #2) above, for the microwave question, when solving for the angle why is it theta=arctan centripal acceleration/gravity? I've figured out that much, i just dont comprehend the theory behind it.

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# Apparent Weight - Elevators

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