. The forces exerted by the bicep muscle and acting on the elbow when a 12 kg barbell is being curledcan be modeled based on the diagram above. The bicep muscle can be treated as a vertical cable. Themass and length of the forearm are 2 kg and 32 cm, respectively. The center of mass of the forearm is adistance of 14 cm from the point P, while the bicep connects to the forearm at a point 4.5 cm from P.a) Determine the tension in bicep muscle and the force of the humerus acting downward on the elbowat point P. b) Assuming the tension in the bicep muscle continues to be oriented vertically, determinethe tension in the bicep muscle and the force acting at P after the barbell has been raised by an angleof 30 relative to the horizontal.

In the figure, a nonuniform bar is suspended at rest in a horizontal position by two massless cords as shown in the figure here. One cord makes the angle 8 = 34.4 with the vertical; the other makes the angle o = 55.6 with the vertical. If the length L of the bar is 3.4 m, compute the distancex from the left end of the bar to its center of mass. com

Dynamics NO: DATE: Ass: A front wheel of a car sup support a GOOON and its rear wheel support 9000 N. The axes are 1.5 meter a part! Where is the center of Gravity of the kar?

The joint angle between thigh and leg is θ = 90°. The resistive forces are the weights of the leg and the foot. The distance between the axis of rotation of the knee joint and the center of mass of the leg is dLEG = 8.6 in, the distance to the center of mass of the foot is dFT = 49 cm. The angle of attachment for the hamstring muscle is λ = 108°. The insertion point of the hamstring is a distance dHAM = 2.5 cm away from the knee joint axis. The mass of the foot is mFT = 1.25 kg, the mass of the leg is mLEG = 3.9 kg. What is the magnitude of FHAM to maintain this position?

O Macmillan Learning The forearm of length Larm = 35.2 cm shown in the figure is positioned at an angle with respect to the upper arm, and a 3.30-kg ball is held in the hand. The total mass mtotal of the forearm and hand is 2.80 kg, and their center of mass is located at LCM = 14.2 cm from the elbow. The biceps muscle attaches to the forearm at a distance Lbiceps = 4.0 cm from the elbow. What is the magnitude of the force Fbiceps that the biceps muscle exerts on the forearm for 0= 63°? Fbiceps = What is the magnitude of the force Fjoint that the forearm exerts on the elbow joint for 0 = 63°? Fjoint = Question Credit: OpenStax University Physics vl N N arm

This is a static of rigid bodies problem

An athlete strengthens her leg and knee by doing "leg curls." While sitting on a bench with the leg initially bent at the knee, she supports a weight with the foot. She then slowly raises the foot and lower leg, with the upper leg held stationary. Find the tension in the quadriceps tendon for the position shown in the figure below. (Let w = 225 N, D = 44 cm and d = 5.5 cm.) please solve thank you

The forearm of length Larm = 35.2 cm shown in the figure is positioned at an angle with respect to the upper arm, and a 5.05-kg ball is held in the hand. The total mass motal of the forearm and hand is 2.75 kg, and their center of mass is located at Le 15.0 cm from the elbow. The biceps muscle attaches to the forearm at a distance Lbiceps = 4.5 cm from the elbow. What is the magnitude of the force Fbiceps that the biceps muscle exerts on the forearm for 0 = 27"? Foiceps 451.9 Fjoint Incorrect What is the magnitude of the force Fjoint that the forearm exerts on the elbow joint for 0= 27"? 375.4 N N AI

1. The figure below shows the normal configuration of the head with proper posture. The center of mass for the weight of the skull is labeled W and the muscles that attach to the back of the skull are labeled M. Assume all quantities are correct to 2 significant figures. M W a) Determine the mechanical advantage of the skull muscles when d₁ 20 mm and d₂ = 26 mm. Hint: Which force on the fulcrum (rotation point) is the effort, and which is the load? Enter to 2 significant figures Mechanical Advantage: b) Improper posture and positioning of the head can lead to muscle tension headaches. If the head begins to shift forward while studying or reading, the center of mass moves further from the fulcrum or pivot point. It is a subtle change, but the figure below shows the head shifted forward. The center of mass for the weight of the skull is labeled W and the muscles that attach to the back of the skull are labeled M. Determine the new mechanical advantage of the skull muscles when d₁ = 16 mm…

8.