Answer:
13333.33 rev/min²
Explanation:
Given:
Initial angular speed of the automobile (ω₁) = 1260 rev/min
Final angular speed of the automobile (ω₂) = 3460 rev/min
Time interval for the change in speed (t) = 9.90 s
Angular acceleration of the automobile (α) = ?
Consider the sense of rotation to be positive. So, making use of the equation of motion of rotation, we have:
Rewriting in terms of 'α', we get:
Converting time 't' from seconds to minutes using conversion factor.
1 sec =
So, 9.90 s =
Plug in all the given values and solve for 'α'. This gives,
Therefore, the angular acceleration in revolutions per minute squared is 13333.33 rev/min².
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Most of the asteroids in the solar system circle the Sun in a large
ring, which is located immediately between the orbits of ________ and
__________
Our Teams Answer: Mars;Jupiter
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Answer:
v_{f2} = √ 2 v_{f}
Explanation:
Work and kinetic energy are related by
W = ΔK
The formula for work is
W = F . d
The formula for kinetic energy is
K = ½ m v²
W = - K₀
Since the body starts from rest, the initial velocity is ro and therefore the kinetic energy is zero.
W = K_{f}
W = ½ m v_{f}²
v_{f} = √ 2W / m
If W = 2 W₀
v_{f2} = √ 2 (2W₀) / m
v_{f2} = √ 2 √2W₀ / m
v_{f2} = √ 2 v_{f}
The position of the particle when it changes direction is x = 3.0 m
Explanation:
The position of the particle is given by the equation
In order to determine its position when it changes direction, we need to find the time t at which the velocity of the particle becomes zero.
The velocity of the particle si given by the derivative of the position, therefore:
The velocity is zero when:
And therefore, the position at t = 0.41 s is
Learn more about position and velocity:
brainly.com/question/5248528
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