The figure below shows an arm that is balancing a carton of milk in the hand. The mass of the carton of milk is 1.77 kg, and F, 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 F is applied to the forearm is 8.00 cm to the left of the elbow joint and 25.0 cm to the right of the center of gravity of the milk carton. (For simplicity, ignore the weight of the forearm.) Milk N -25.0 cm- What is the magnitude of F (in N)? 75.0 8.00 cm 1

The figure below shows an arm that is balancing a carton of milk in the hand. The mass of the carton of milk is 1.77 kg, and F, 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 F is applied to the forearm is 8.00 cm to the left of the elbow joint and 25.0 cm to the right of the center of gravity of the milk carton. (For simplicity, ignore the weight of the forearm.) Milk N -25.0 cm- What is the magnitude of F (in N)? 75.0 8.00 cm 1

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 47P: A man stands on a merry-go-round that is rotating at 2.5 rad/s. If the coefficient of static...

See similar textbooks

Similar questions

When tightening a bolt, you push perpendicularly on a wrench with a force of 165N at a distance of 0.140m from the center of the bolt. How much torque are you exerting relative to the center of the bolt?
At the local playground, a 21-kg child sits on the right end ofa horizontal teeter-totter, 1.8 m from the pivot point. On the leftside of the pivot an adult pushes straight down on the teeter-totterwith a force of 151 N. In which direction (clockwise or counterclockwise) does the teeter-totter rotate if the adult applies the forceat a distance of (a) 3.0 m, (b) 2.5 m, or (c) 2.0 m from the pivot?
A small ball of mass0.75 kg is attached to one endof a 1.25-m-long massless rod, and the other end of the rod is hung from a pivot.When the resultingpendulum is 30 from the vertical, what is the magnitude of the gravitationaltorque calculated about the pivot?
An auto magazine reports that a certain sports car has 53% of its weight on the front wheels and 47% on its rear wheels. (That is, the total normal forces on the front and rear wheels are 0.53w and 0.47w, respectively, where w is the car’s weight). The distance between the axles is 2.46 m. How far in front of the rear axle is the car’s center of gravity?
A uniform plank of length 2.00 m and mass 30.0 kg issupported by three ropes, as indicated by the blue vectors inFigure P8.27. Find the tension in each rope when a 700.-Nperson is d = 0.500 m from the left end.
•• A squirrel-proof bird feeder has a lever that closes to protect theseeds when a 0.42-kg squirrel sits on it, but not when a 0.077-kgbird perches there. (a) If the lever radius is 9.6 cm, what torquesdo the squirrel and the bird each exert on it? (b) The torque produced by the animal is balanced by a spring that applies a perpendicular force a distance of 3.5 cm from the axis of rotation. Ifthe squirrel must stretch the spring 2.5 cm in order to close thelever and protect the seeds, what should be the force constant ofthe spring
Suppose a person wishes to lift a large rock with the lever. If the rock has a mass Of 250 kg and is located 50 cm from the pivot, and the person can put a force of 650 N Straight down on her end of the lover, what is the maximum distance from the fulcrum she has to be to lift the rock?
You are holding a 20 kg dumbbell straight out at arm's length. Assuming your arm is 0.80 m long, what torque is the dumbbell exerting on your shoulder?
In an amusement park ride called ‘The Roundup’, passengers stand inside a 18-m diameter rotating ring. After thering has acquired its final speed of 14 rpm’s, it tilts into a vertical plane. Whatweight does the rider feel at the top and bottomif they have a weight of 830 N?
A particle is located at r = (4.0i+3.5j+6.0k), A force F= (9.0j-4.0k) N acts on it. What is the torque calculated about the origin?
The wheels,axle, and handles of a wheelbarrow weigh W=56N. The load chamber and it’s contents weigh WL=635N.the drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a force to the handles that is directed vertically upward.consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper.find the magnitude of the man’s force for both designs.
The figure below shows a human arm that weighs 41.10 N. The arm is extended outward and is motionless. The gravitational force Fg on the arm acts at point A, a distance of 0.2900 m from the shoulder joint, which is represented by point O. The shoulder pushes down and to the right on the humerus bone of the arm with a force Fs at point O, at an angle ? as shown. The deltoid muscle pulls back on the arm toward the shoulder with a tension force Ft. This tension force acts at a point 0.08000 m to the right of point O, and it is directed up and to the left, at a 12.00° angle with respect to the horizontal. An arm is extending horizontally to the right with a cutout that shows muscles in the upper arm. A horizontal dashed line extends along the bottom of the muscles and another along the top. Point O is labeled at the left end of the arm on the lower horizontal line. An unlabeled point lies 0.080 m horizontally to the right of point O. Point A lies 0.290 m horizontally to the right of point…