
大学物理动力学? 10
2个回答
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ω0 = 600 r/min =600 * 2π / 60 = 20π rad/s
0 = ω0 - β t , β = ω0 / t
μ N R = I β
N = I β / (μ R)
= 1/2 m R^2 * (ω0 / t) / (μ R)
= 314 N
0 = ω0 - β t , β = ω0 / t
μ N R = I β
N = I β / (μ R)
= 1/2 m R^2 * (ω0 / t) / (μ R)
= 314 N
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