An athlete with a mass of 50.0 kg is doing pushups as shown in the figure below. The value for rW⊥ is 0.95 m and the value for rR⊥ is 1.56 m. (a) Assuming she moves upward at a constant speed, determine the force she must exert on the floor with each hand to do a push-up. ______ N (b) The triceps muscle in the back of her upper arm with an effective lever arm of rT⊥ = 1.60 cm, as shown in the figure below, and she exerts force on the floor a horizontal distance of r 'R⊥ = 1.95 cm from the elbow joint. Determine the force
An athlete with a mass of 50.0 kg is doing pushups as shown in the figure below. The value for rW⊥ is 0.95 m and the value for rR⊥ is 1.56 m.
(a) Assuming she moves upward at a constant speed, determine the force she must exert on the floor with each hand to do a push-up. ______ N
(b) The triceps muscle in the back of her upper arm with an effective lever arm of rT⊥ = 1.60 cm, as shown in the figure below, and she exerts force on the floor a horizontal distance of r 'R⊥ = 1.95 cm from the elbow joint. Determine the force in the triceps muscle. ______N
(c) In order to appreciate the strength of the triceps, determine the ratio of the force in the tricep muscle to her weight (in decimal form). FT/W = _____
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