Maximum amplitude and minimum effort by bending her knees

Reference no: EM139065

Q. A baby bounces up and down in her crib. Her mass is 10.5 kg, and the crib mattress can be modeled as a light spring with force constant 716 N/m.

(a) The baby soon learns to bounce with maximum amplitude and minimum effort by bending her knees at what frequency?

(b) If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need?

Reference no: EM139065

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