Single-segment planar static model
A person is holding a load of 25-kg mass with both hands in front of his body and his forearms are horizontal. The load is equally balanced between the two hands. The distance between the load and elbow is 38cm. Only the right hand, right forearm, and right elbow are shown in the practice problem.
1.Calculate the load weight on each hand.
2.Calculate the each elbow reactive force under the assumption that a typical worker has the weight of the forearm-hand segment 20N and the distance between the center of mass of the forearm-hand segment and the elbow 16 cm.
3.Calculate the elbow moment.
A person is holding a load of 25-kg mass with the right hand only in front of his/her body and his/her forearm is horizontal during the holding.
Calculate the 5th to 95th adjustable range of the elbow moment for the population consisted of 50/50 male and female. Assume that the weight of the forearm-hand segment is 14N regardless of the gender and the center of the gravity is at the middle between the elbow joint and the grip