Recent content by sKyHigh

By assuming a height differential of 2.5 cm between E and the point of insertion of the biceps into the radius (i.e., a distance of 5.6 cm between E and said point of insertion), I get FA = 3.26 N, FB = 38.24 N, and FEy = 25.67 N [down]. Can anyone verify this? Thanks!

Bump! :p

Thank you, that is precisely where my uncertainty lies in my attempt to solve the problem. Do you know of a more accurate way to solve the problem than assuming a height differential of, say, 2.5 cm? That is, I would instead use "(5.6 cm)sin(86.19 deg)" and "(5.6 cm)sin(80.54 deg)"...

Thanks for responding! Was my use of trigonometry correct, particularly when calculating the moment arms? I neglected the 6 cm width of the forearm, not sure if it was okay to do so. That's where I had a bit of uncertainty. Also, in retrospect, FEy should be negative; the elbow ALWAYS exerts a...

It's a fun problem for anyone who enjoys classical mechanics. Can anyone afford the time to work through the problem and see if they get the same numbers as me? Thanks!

Buuuuump! xD

Please let me know if I did this wrong or right, and if I did it wrong, please correct me :) 1. Homework Statement The biceps brachii, a muscle in the arm, connects the radius, a bone in the forearm, to the scapula in the shoulder (see below). The muscle attaches at two places on the scapula...