the wheels of a car increase their rate of rotation from 1.0 rev/s to

1.	the wheels of a car increase their rate of rotation from 1.0 rev/s to 8.0 rev/s in 20s calculate the angular acceleration of the wheel?
Answer» Let æ_irepresents initial angular speed and æ_frepresents final angular speed. let % represent pie. let f_i&f_f are frequencies initially and finally. f_i= 2 rev/sec f_f = 8 rev/sec æ_i = 2%f_i= 2% rad/sec æ_f= 2%f_f= 16% rad/sec del æ=d æ =æ_f- æ_i= 14% rad/sec let a_cis angular acceleration a_c= d æ / dt = 14% / 20 = 0.7 rad/sec² ^Proof:æ_f = æ_i+ a_c * t = 2% + 0.7*20 = 16% rad/sec

the wheels of a car increase their rate of rotation from 1.0 rev/s to 8.0 rev/s in 20s calculate the angular acceleration of the wheel?

Answer»

Let æ_irepresents initial angular speed and æ_frepresents final angular speed. let % represent pie.

let f_i&f_f are frequencies initially and finally.

f_i= 2 rev/sec f_f = 8 rev/sec

æ_i = 2%f_i= 2% rad/sec æ_f= 2%f_f= 16% rad/sec del æ=d æ =æ_f- æ_i= 14% rad/sec

let a_cis angular acceleration

a_c= d æ / dt = 14% / 20 = 0.7 rad/sec²

^Proof:æ_f = æ_i+ a_c * t = 2% + 0.7*20 = 16% rad/sec

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the wheels of a car increase their rate of rotation from 1.0 rev/s to 8.0 rev/s in 20s calculate the angular acceleration of the wheel?

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