A particle travels counterclockwise around the origin at constant speed in a circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R, which lie on the x axis and the y axis, respectively. State the following velocites as vectors in polar notation. (a) What is the particle's average velocity over the interval PR? (b) What is its average velocity over the interval PQ? (c) What is its instantaneous velocity at point P?
The coordinates for P is (1.25,0), coordinates for R is (0,1.25), I do not know what the coordinate for Q is, There is a diagram, a circle, where pt. P and pt. R are part of it. Q is in the middle of P and R
a) (___,___°)
b) (___,___°)
c) (___,___°)
2006-11-09 15:31:13 · 3 answers · asked by venom90011@sbcglobal.net 1 in Science & Mathematics ➔ Physics
2006-11-09 15:39:21 · answer #1 · answered by jim n 1 · 0⤊ 0⤋
P and R are 90 degrees apart, right?
Q is at 45 degrees between them, right?
The particle is always moving at the same speed, right?
The distance around the circle is 2 * pi * radius.
The rest is simple arithmetic.
2006-11-09 23:50:07 · answer #2 · answered by Happy Camper 5 · 0⤊ 0⤋
the radius for Q is also 1.25, because it's on the circular path.
U can us (rcoswt,rsinwt). r=1.25. w=4pi. I think this is correct way of starting it
2006-11-10 00:00:27 · answer #3 · answered by Blahblah_bbbllaah 2 · 0⤊ 0⤋