Register to reply

Angular velocity

by Miike012
Tags: angular, velocity
Share this thread:
Nov26-11, 11:37 PM
P: 1,011
A centrifuge is used to increase the sedimentation rate of
particles suspended in a liquid, over the rate produced
by gravity alone. Find the angular velocity of a centri -
fuge in which a particle 10.0 cm from the axis of rotation
experiences a radial acceleration of 1.00* 10^3
times gravitational acceleration g.

Solution: radius (r) = 0.01 m ; ar = 1.00*10^3*9.80

1.00*10^3*9.80 = (.01)w^2

w = ( 1.00*10^3*9.80/.01)^(1/2) = 989

Answer is 313 rad/sec....

where did I go wrong>?
Phys.Org News Partner Science news on
World's largest solar boat on Greek prehistoric mission
Google searches hold key to future market crashes
Mineral magic? Common mineral capable of making and breaking bonds
Nov27-11, 12:11 AM
1MileCrash's Avatar
P: 1,289
10.0 cm = 0.1 m

Do not underestimate the girth of the centimeter.
Nov27-11, 12:18 AM
P: 1,011
thank you,

Register to reply

Related Discussions
Angular acceleration and force with constant angular velocity? Introductory Physics Homework 6
Radius to angular velocity relationship (constant angular accel) Introductory Physics Homework 9
Angular Momentum - Find angular velocity of a hanging bar after a collision Introductory Physics Homework 1
Are angular displacement, angular velocity, and angular acceleration, vectors? Classical Physics 5
Physics Rotating Disk, Moment of Inertia, Angular Momentum, Angular Velocity Introductory Physics Homework 12