A weight lifter is doing a leg extension exercise in a

Reference no: EM13630799

A weight lifter is doing a leg extension exercise in a seated position with his knee joint center of rotation fixed on the machine. If his lower leg is at 45 degrees, the angular velocity is 1.5 rad/s and the angular acceleration is 10 rad/s^2. The weights apply a vertical force to his anke joint of 1000 N located 50 cm from the knee joint. Leg mass is 4 kg located 20 cm from the knee and the Icm is 0.25 kgm^2.

a. Determine the total mass moment of inertia for the leg and weights about the knee joint.

b. Determine the knee joint extension moment at this moment in the excercise.

Reference no: EM13630799

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