Q1. A person exerts a horizontal force of F = 175 N in the test apparatus shown in the drawing. (h = 0.25 m.) Find the horizontal force M that his flexor muscle exerts on his forearm.
Q2. The trombone's low B2 is played with the slide in first position. Take the speed of sound to be 344m/s.
What is its effective length--that is, length of an idealized closed tube with the same second-mode frequency?