Question1
A relaxed biceps muscle requires a force of 25.0N for an elongation of 3.0 cm; below maximum tension, the same muscle requires a force 500N for the same elongation. Find the Young's modulus for the muscle tissue under each of these conditions if the muscle can be modelled as a uniform cylinder with the initial length of 0.200 m and a cross-sectional area of 50 cm^2
Question2
A swimming pool has dimensions 32.0 m 8.0 m and a flat bottom. The pool is overflowing to a depth of 1.70 m with fresh water.
(a) What is force exerted by the water on the bottom?
1 N down
(b) what is force exerted by the water on each end? (The ends are 9.0 m.)
2 N outward
(c) What is force exerted by the water on each side? (The sides are 32.0 m.)
3 N outward