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Leona [35]
3 years ago
8

A car is traveling at an angular acceleration of 0.04 rad/s2 on a circular part of a road. If the radius of the circular part is

200m, find the net acceleration of the car when the angular velocity of the car is 0.2rad/s.
Physics
1 answer:
natta225 [31]3 years ago
4 0

Answer:

8 m/s²

Explanation:

α = 0.04 rad/s²

w = 0.2 rad/s

t = ?

α = w/t

===> t = w/α = 0.2/0.04 = 5 sec

v = wr = 0.2 × 200 = 40 m/s

the net acceleration a = v/t = 40/5 = 8 m/s²

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Answer:

Explanation:

From the question we are told that

   The moment of inertia is  I = 2.50 \ kg \cdot m^2

    The final  angular speed is w_f =  400 rev/min  =  \frac{400 * 2\pi}{60}  = 41.89 \ rad/s

     The time taken is  t =  8.0 s

      The initial angular speed is  w_i  =  0\ rad/s

Generally the average angular acceleration is mathematically represented as

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   \tau  =  I  *  \alpha

=>    \tau   =  5.24 *  2.50

=>     \tau   =  13.09 \  N \cdot m

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Hope this helps!

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