1. What are the torque values produced by the lower arm and Dumbbell weights?
2. What is the torque required for the biceps brachii to maintain this isometric contraction?
3. What force is required from the biceps brachii to create this torque?
4. Calculate the Rotational Components for each weight and the biceps brachii force.
5. Calculate the Non-Rotational Components for each weight and the biceps brachii force.
6. What are the joint reaction forces required to balance the Rotational and Non-Rotational Component forces?

 

Dumbbell Force Magnitude = 25lb (convert to Newtons) Distance = 37 cm Angle - 45 Lower Arm 1. Determine the components of the forces acting on the lower arm while holding the dumbbell in the position presented and the joint reaction force caused by the translational effects of the forces applied. From your calculated information, determine the muscular effort required to be exerted by the biceps brachii necessary to have an isometric contraction occur. Force Magnitude = 25 N Distance - 18cm Angle = 45 Muscular Force 55 Force Magnitude-? Distance = 2cm Angle - 55 45 P 45 Conversions: lbs / 2.2 = kilograms kg x 2.2 pounds kg x 9.81 Newtons Dumbbell Force Magnitude = 25lb (convert to Newtons) Distance = 37 cm Angle 45 Lower Arm 1. Determine the components of the forces acting on the lower arm while holding the dumbbell in the position presented and the joint reaction force caused by the translational effects of the forces applied. From your calculated information, determine the muscular effort required to be exerted by the biceps brachii necessary to have an isometric contraction occur. Force Magnitude - 25 N Distance - 18cm Angle = 45 Muscular Force 55 Force Magnitude - ? Distance = 2cm Angle - 55 45 P 45 Conversions: Ibs/ 2.2 =kilograms kg x 2.2 pounds kg x 9.81 Newtons