4. An Olympic lifter (m= 103kg) is holding a lift with a mass of 350 kg. The bar exerts a purely vertical force that is equally distributed between both hands. Each arm has a mass of 9 kg, are 0.8m long and form a 40° angle with the horizontal. The CoM for each arm is 0.5 m from hand. Assuming the lifter is facing us in the diagram below, his right deltoid inserts 14cm from the shoulder at an angle of 13° counter-clockwise from the humerus. 0.8m center of mass of arm a) You are interested in calculating the force in the right deltoid. Draw a free body diagram of the right arm including the external forces, joint reaction forces, a coordinate system and state your assumptions.
4. An Olympic lifter (m= 103kg) is holding a lift with a mass of 350 kg. The bar exerts a purely vertical force that is equally distributed between both hands. Each arm has a mass of 9 kg, are 0.8m long and form a 40° angle with the horizontal. The CoM for each arm is 0.5 m from hand. Assuming the lifter is facing us in the diagram below, his right deltoid inserts 14cm from the shoulder at an angle of 13° counter-clockwise from the humerus. 0.8m center of mass of arm a) You are interested in calculating the force in the right deltoid. Draw a free body diagram of the right arm including the external forces, joint reaction forces, a coordinate system and state your assumptions.
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter4: Coplanar Equilibrium Analysis
Section: Chapter Questions
Problem 4.41P: The center of gravity of the 3000-lb car is at G. The car is parked on an incline with the parking...
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