What is the acceleration of the speaker cone with these specifications?

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The discussion focuses on calculating the acceleration of a speaker cone using specific parameters, including coil diameter, number of turns, mass, magnetic flux density, and current. The formula derived from the provided data results in an acceleration of 113 m/s² for the cone. The relationship between the number of turns and the acceleration is clarified, indicating its relevance in the calculation. The importance of maintaining proper units throughout the calculations is emphasized. The final result confirms the acceleration value, demonstrating successful problem-solving.
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the following data apply to the speaker system:
coil diameter = 5.8cm
coil turns = 86
coil and cone mass = 30g
magnetic flux density = 0.12T
Current in the coil = 1.8A
Using the above data, the acceleration of the cone will be?
A) 12.6 b) 79.3 c) 113 d) 247

This comes from my revision sheet i don't know how number of turns related to this

30/1000 x a = 1.8 x 0.12 x 2pi x 5.8/100 x 86

a = 113 (SOLVED THX!)
 
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.. so you've solved this OK now?! :smile:

Also.. Remember your units! :wink:
 

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