An aluminum rod is designed to break when it is under a tension of 600 n. one end of the rod is connected to a motor and a 12-kg spherical object is attached to the other end. when the motor is turned on, the object moves in a horizontal circle with a radius of 6.0 m. if the speed of the motor is continuously increased, at what speed will the rod break? ignore the mass of the rod for this calculation.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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the answer is 12 as i may remember

: )