tangential acceleration??
posted by anonymous
An ultracentrifuge accelerates from rest to 100,000 rpm in 2.00 min. What is the tangential acceleration of a point 9.50 cm from the axis of rotation? Your answer should be given in m/sec squared.
Tangential acceleration = angular acceleration * radius
How would I find this?

Scott
angular acceleration = (1E5 * 2 * π) / (2 * 60)
... rad/s^2
the radius is ... .095 m 
anonymous
That gives me 497.42...it's wrong

Damon
change in angular velocity
= 10^5 * 2 pi radians/60 seconds
change in time = 2 * 60 seconds
so I get
10^5 * 2 *pi /(120*60)
multiply that by .095
or just divide previous answer by 60 
Scott
is it a significant figure issue?
you've got 5 in your answer
but there is only one in the rpm data
Respond to this Question
Similar Questions

Physics
1.During a tennis serve,the top of the raquet,which is 15m from its pivot point,accelerats from rest to a speed of 10m/s in a time of 0.10s.Calculate the average tangential acceleration and the top of the racquet and also its angular … 
physics
The flywheel of a steam engine runs with a constant angular speed of 250 rev/min. When steam is shut off, the friction of the bearings stops the wheel in 2.1 h. At the instant the flywheel is turning at 75 rev/min, what is the tangential … 
Physics  angular acceleration
An object rotates about a fixed axis, and th angular position of a reference line on the object is given by THETA(t)=0.4e^2t, where THETA is in radians, and t is in seconds. [a.] what is the object's angular acceleration at t = 2 s? 
physic
Hi!could anyone help me please, I don't get it. Thank you so much for your help. Question:(a) What is the tangential acceleration of a bug on the rim of a 9.0 in. diameter disk if the disk moves from rest to an angular speed of 79 … 
physics
(a) What is the tangential acceleration of a bug on the rim of a 6.0 in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5.0 s? 
physics
(a) What is the tangential acceleration of a bug on the rim of a 6.0 in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5.0 s? 
Physics
a) What is the tangential acceleration of a bug on the rim of a 6in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5 seconds? 
physics
The flywheel of a steam engine runs with a constant angular speed of 164 rev/min. When steam is shut off, the friction of the bearings and the air brings the wheel to rest in 1.6 h. I figured out the constant angular acceleration=1.71 … 
physics
You are designing a centrifuge to spin at a rate of 13,880 rev/min. (a) Calculate the maximum centripetal acceleration that a testtube sample held in the centrifuge arm 14.6 cm from the rotation axis must withstand. (b) It takes 1 … 
phy
A wheel rotates about an axis passinG through the centre and perpendicular to the plane with slowly increasinG angular speed.thus it has?