A flea is at point A on a horizontal turntable 8.1 cm from the center. The turntable is rotating at 33.9 rev/min in the counterclockwise direction. The flea jumps vertically upward to a height of 4.11 cm and lands on the turntable at point B. Place the coordinate origin at the center of the turntable with the positive x axis fixed in space and initially passing through A. The acceleration of gravity is 9.8 m/s2 .(adsbygoogle = window.adsbygoogle || []).push({});

1) Find the linear displacement of the flea.

Answer in units of m

2) Find the angle through which point A has

rotated when the flea lands.

Answer in units of degrees

3) Find the distance of point B from the origin

when the flea lands.

Answer in units of m

4) What angle does the radius drawn through B

make with the x-axis when the flea lands?

Answer in units of degrees

5) What is the linear speed of the flea after it

lands?

Answer in units of m/s

I am clueless as to how to get past the first part. Here was my work for part 1:

-convert 33.9 rev/min to m/s and got 0.2875 m/s

-used the equation y= a(t^2)/2 and got t= .0916 but that was only half the time, so I multipled by 2 and got time= 0.1832

-to find distance, i used d= v(t) and found the distance was 0.0527 m.

From here, I am lost. I have tried to do the arctan y/x equations to get the degrees but nothing is turning out right. And I am having difficulty understand parts 3-5 from the context of the question.

Any help is appreciated!

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# Homework Help: HELP ME PLEASE: A flea is at point A on a horizontal turntable

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