• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Kinematics homework help

  • Thread starter frozen7
  • Start date
164
0
A grinding wheel (radius 7.6cm) is rotating at 1750 rpm.
(a) What i the speed of a point on the outer edge of the wheel?
(b)What is the centripetal acceleration of the point?

I do this question in this way:

(a) f= 1750rpm = 29.167rps => T= 1/f = 0.03428

v= (2"pie"r) / T
= 13.93
(sorry...I dont know how to key in "pie", can anyone teach me?)

(b) a = (v^2) / r
= 2553.2

Am I right?
 
frozen7 said:
sorry...I dont know how to key in "pie", can anyone teach me
without using TEX, u can also create the symbol π by typing "&" then "pi" then ";" (semicolon) like this: π
 
Last edited:

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top