Constants A 71.0 kg weight lifter is doing arm raises using a 7.50 kg weight in...
A 75.0 kg weight lifter is doing arm raises using a 7.50 kg weight in her hand. Her arm pivots around the elbow joint, starting 40.0 below the horizontal. (See the figure (Figure 1).) Biometric measurements have shown that both forearms and the hands together account for 5.75% of a person's weight. Since the upper arm is held vertically, the biceps muscle always acts vertically and is attached to the bones of the forearm 5.50 cm from the elbow Part...
Part A A 75.0 kg weight lifter is doing arm raises using a 7.50 kg weight in her hand. Her arm pivots around the elbow joint, starting 40.0° below the horizontal (See the figure(Figure 1).) Biometric measurements have shown that both forearms and the hands together account for 5.75 % of a person's weight. Since the upper arm is held vertically, the biceps muscle always acts vertically and is attached to the bones of the forearm 5.50 cm from the...
To develop muscle tone, a woman lifts a 4.50 kg weight held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. a) What is the angular acceleration (in rad/s2) if the weight is 24.0 cm from the elbow joint, her forearm has a moment of inertia of 0.250 kg · m2, and the net force she exerts is 500 N at an effective perpendicular lever arm of 2.20 cm? (Ignore gravity)...
To practice Problem-Soving Strabegy 8 1 Staic equlibrium problems When you in an object by moving only your torearm, the main ifting musdle in your arm is the biceps Suppose the mass of a fore arm is 150 kg If the biceps is connected to the fore arm a distanvce d 3.00 cm trom the elbow, how much force must the biceps exert to hold a 750 g ball at the end of Part F the forearm at distance d...
biceps 2) Suppose that the dumbbell has a mass of 10.0 kg (so its weight equals 98.0 N) and the arm that holds it has a mass of 2.2 kg (with a weight of 21.6 N). The weight acts 3.0 cm from the elbow joint and we can think of all of the mass of the arm as at a distance of 14.0 cm from the elbow. Find the force in the biceps muscle if it attaches 3.1 cm from...
Question 26 4 points Figure shows an illustration of a human arm while iting a metal sphere of weight 20.4 N. The forearm is horizontal and the arm is in equilibrium. The main forces involved and their distances from the elbow joint are shown in the figure biceps muscle metal sphere forearm elbow joint 004 m 0.15 m 18 N weight of the sphere 0.46 m Considering the moments about the elbow joint, calculate the size of the force F...
The figure below shows an arm that is balancing a carton of milk in the hand. The mass of the carton of milk is 1.08 kg, and in the figure is the gravitational force on the carton The biceps muscle applies a force F, to the forearm directed up and to the right at an angle of 75.0" from vertical. The point where is applied to the forearm is 8.00 cm to the left of the elbow joint and 25.0...
20 21 22 24 Figure shows an illustration of a human arm while lifting a metal sphere of weight 278 N. The forearm is horizontal and the arm is in equilibrium. The main forces med and the distances from the elbow joint are shown in the figure. biceps muscle metal sphere forearm elbow joint 0.04 m 0.15 m 1 18 N weight of the sphere 0.46 m Considering the moments about the elbow joint, calculate the size of the force...
Biceps muscle The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and a length of 0.465 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 5.75 kg so that her forearm remains...
The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.152.15 cm beyond the joint. Assume the forearm has a mass of 2.252.25 kg and a length of 0.4250.425 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 7.357.35 kg so that her forearm remains motionless, what...