Thursday

November 27, 2014

November 27, 2014

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.

**Answer this Question**

**Related Questions**

physics - A 44.3-cm diameter disk rotates with a constant angular acceleration ...

physics - A 49.7-cm diameter disk rotates with a constant angular acceleration ...

Physics - A 46.5-cm diameter disk rotates with a constant angular acceleration ...

Physics - A 46.5-cm diameter disk rotates with a constant angular acceleration ...

Physics - Starting from rest, a disk rotates about its central axis with ...

Physics 1 - A disk rotates with constant angular acceleration. The initial ...

Physics - 1) A circular disk 0.20m in diameter starts from rest and accelerates ...

physics - A disk rotates about its central axis starting from rest and ...

Physics - A horizontal disk with a radius of 23 m ro- tates about a vertical ...

physics - starting from rest, a disk rotates about its central axis with ...