If you hold your upper arm vertical and your lower arm horizontal with your hand palinwdown on a table, as shown in the figure below and now push down on the table, you'll feel that your triceps muscle has contracted and is trying to pivot your lower arm about the elbow joint. 1. If a person with the arm dimensions Triceps shown pushes down hard with a 95~N force, what force must the triceps muscle provide? Ignore the mass of the forearm f and hand in your calculation. 2. Estimate the combined mass of the forearm and hand and then redo your F" ~ * . * I Hrl work in question Bl With this mass w 30 cm included in your calculations. __ 24 cm 3. Does ignoring the mass signicantly effect the value you calculate for the force exerted by the triceps? Explain why or why not