Tuesday, January 24, 2017

Activity 76: Centripetal Acceleration and Centripetal Force



Read Section 6.2 in the textbook






Equations from yesterday

radians = arc length/radius

angular velocity  = radians/second

velocity =  radius X angular velocity


Acceleration = change in velocity/time





Substituting v = rω into the above expression, we find ac = (rω)2 / r = rω^2.


So centripetal acceleration equals the following:

 Centripetal Acceleration

From Newton's 2nd law we know:
and substituting in acceleration from the above equation gives:



So why does the water stay in the pail?


Complete Questions 10, 11, 13, 14  and the end of chapter 6:

 when done Check your answers here....



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