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25.06.2021 •
Physics
A motorcycle, which has an initial linear speed of 5.0 m/s, decelerates to a speed of 3.5 m/s in 4.5 s. Each wheel has a radius of 0.60 m and is rotating in a counterclockwise (positive) directions. What is (a) the constant angular acceleration (in rad/s2) and (b) the angular displacement (in rad) of each wheel?
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Ответ:
Explanation:
Given that,
A motorcycle, which has an initial linear speed of 5.0 m/s, decelerates to a speed of 3.5 m/s in 4.5 s. Each wheel has a radius of 0.60 m and is rotating in a counterclockwise (positive) directions.
Angular acceleration,
Put all the values,
Angular displacement,
Hence
Ответ:
(a) The angular acceleration is - 0.56 rad/s^2.
(b) The angular displacement is 31.6 rad.
Explanation:
initial velocity, u = 5 m/s
final velocity, v = 3.5 m/s
radius, r = 0.6 m
time, t = 4.5 s
initial angular velocity, wo = u/r = 5/0.6 = 8.33 rad/s
final angular velocity, w = v/r = 3.5 / 0.6 = 5.83 rad/s
(a) Use the first equation of motion to fine the angular acceleration.
(b) Use third equation of motion to find the angular displacement
Ответ:
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Explanation:
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