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georgesarkes12
23.01.2020 •
Physics
Amechanic needs to replace the motor for a merry-go-round. the merry-go-round should accelerate from rest to 1.5 rad/s in 7.0 s . consider the merry-go-round to be a uniform disk of radius 6.0 m and mass 25,000 kg. suppose that it is supported by bearings that produce negligible friction torque.
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Ответ:
Answer
given,
initial speed of merry-go-round = 0 rad/s
final speed of merry-go-round = 1.5 rad/s
time = 7 s
Radius of the disk = 6 m
Mass of the merry-go-round = 25000 Kg
Moment of inertia of the disk
I = 450000 kg.m²
angular acceleration
we know,
Ответ:
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Explanation: