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March 29, 2015

March 29, 2015

Posted by **Kevin** on Wednesday, July 13, 2011 at 10:56pm.

Find the position of P (in degrees, with respect to the positive x-axis) at t = 2.30s.

The "answer" is suppose to be 0.#### but I keep getting in the hundreds when I convert to degrees from radians.

I've been doing (6.9 rad/s)(2.3s) = 15.87 rad

since 57.3° = 1 radian I did 15.87 - 1 = 14.87 then minus 2(2pi) = 3.303629 then times 180/pi = 131.988°

2nd method is going clockwise so I did 15.87 rad + 1 = 16.87 - 2(2pi) = 4.273629 times 180/pi = 244.8609°

But neither answer is correct since it's suppose to be like in the 0.### area.

Please help!

- PHYSICS -
**Henry**, Thursday, July 14, 2011 at 8:43pmA = 2(180/pi) = 114.59 deg.

a = 114.59 deg/s^2.

d = Vo + 0.5at^2

d = 0 + 0.5*(114.59)(2.3)^2=303.09 deg.

303.09 + 57.3 = 360.39 deg.

P = 360.39 - 360 = 0.39 deg, CCW from x-axis.

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