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

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The acceleration of the speaker cone, given the specifications of a coil diameter of 5.8 cm, 86 turns, a combined mass of 30 g, a magnetic flux density of 0.12 T, and a current of 1.8 A, is calculated to be 113 m/s². The formula used for this calculation is derived from the relationship between the mass, current, magnetic flux, and the physical dimensions of the coil. The discussion emphasizes the importance of unit consistency in calculations.

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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: