A 60.0-kg person jumps onto the floor from a height of 3.00 m. If he lands stiffly
Question:
A 60.0-kg person jumps onto the floor from a height of 3.00 m. If he lands stiffly (with his knee joints compressing by 0.500 cm), calculate the force on the knee joints.
Strategy
This person's energy is brought to zero in this situation by the work done on him by the floor as he stops. The initial PEg is transformed into KE as he falls. The work done by the floor reduces this kinetic energy to zero.
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Step by Step Answer:
The work done on the person by the floor as he stops is given by with a minus sign because t...View the full answer
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