Business, 04.03.2020 01:54 gugu1004

The mass of the box is 5kg (the mass center is located in the middle of the box), the mass of a lower arm plus a hand is 1.5 kg (the mass center is located in the middle of the segment), an upper arm weighs 2 kg (the mass center is located in the middle of this segment), and the total mass of the head and torso is 27 kg. Assuming g=10N/kg and 1 iinch=2.54 cm, how large is the force exerted by the back extensor muscles at the L5/S1 in Newtons? How large is the compression force at the L5/S1? How large is the shear force at the L5/S1?

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The mass of the box is 5kg (the mass center is located in the middle of the box), the mass of a lowe...

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