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The protein dynein powers the flagella that propel some unicellular organism. biophysicists have found that dynein is intrinsically oscillatory and that it exerts peak forces of about 1.0 pN when it attaches to structures called microtubules. thee resulting oscillation have amplitude 15 nm. (a) if the system is to be modeled as a mass spring system, what's the associated spring constant? (b) if the oscillation frequency is 70 Hz, what's the effective mass?

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