Homework Help: Physics

Posted by Ed on Saturday, November 28, 2009 at 6:03pm.

A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time.
(Hint: Remember the counter-clockwise rule for positive angular velocity and acceleration.)
(a) Find the angular speed of the wheel at t = 2.30 s.
__ rad/s

(b) Find the linear velocity and tangential acceleration of P at t = 2.30 s.
linear velocity _____ m/s
tangential acceleration _____ m/s2

c) Find the position of P (in degrees, with respect to the positive x-axis) at t = 2.30s.
(Hint: Your answer must be between 0 and 360 degrees.)
_____°

No one has answered this question yet.

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 - Starting from rest, a disk rotates about its central axis with ...
Physics 203 ( College) - A disk of radius 12 cm, initially at rest, begins ...
physics - A centrifuge in a medical laboratory rotates at an angular speed of ...
physics - A dentist's drill starts from rest. After 2.50 s of constant ...
Physics - A dentist's drill starts from rest. After 3.30 s of constant ...
Physics - A dentist's drill starts from rest. After 3.30 s of constant ...
PHYSICS - A 54.0-cm diameter disk rotates with a constant angular acceleration ...

For Further Reading

First Name:
School Subject:
Answer: