7.* A spider of mass equal to 10 g hangs from its webs as shown below. Calculate the magnitude of the tension forces F, and F,. We assume here that the webs are inextensible and have negligible mass. 0.75 m F2 1m

7.* A spider of mass equal to 10 g hangs from its webs as shown below. Calculate the magnitude of the tension forces F, and F,. We assume here that the webs are inextensible and have negligible mass. 0.75 m F2 1m

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: The Laws Of Motion

Section: Chapter Questions

Problem 5.4P: A certain orthodontist uses a wire brace to align a patients crooked tooth as in Figure P5.4. The...

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The Iron Cross When a gymnast weighing 750 N executes the iron cross as in Figure lN.91a, the primary muscles involved in supporting this position are the latissimus dorsi (lats") and the pectoralis major (pecs"). The rings exert an upward force on the aims and support the weight of the gymnast. The force exerted by the shoulder joint on the arm is labeled Fs, while the two muscles exert a total force Fw on the arm. Estimate the magnitude of the force Fw. Note that one ring supports half the weight of the gymnast, which is 375 N as indicated in Figure P8.91b. Assume that the force Fw acts at an angle of 45 below the horizontal at a distance of 4.0 cm from the shoulder joint In your estimate, take the distance from the shoulder joint to the hand to be L = 70 cm and ignore the weight of the arm.
A certain orthodontist uses a wire brace to align a patients crooked tooth as in Figure P5.4. The tension in the wire is adjusted to have a magnitude of 18.0 N. Find the magnitude of the net force exerted by the wire on the crooked tooth.
Problem: A block is resting on a ramp as shown in the figure below. You can change the inclination angle θ by raising one end of the ramp. The block has a mass mb=6.5 kg. At the interface between the ramp and the block, the coefficient of static friction is μs=0.4, and the coefficient of kinetic friction is μk=0.28. I managed to calculate that: slip angle is θ= 21.8 degrees acceleration is 1.09 m/s^2. I am trying to find: Let the angle θ be the angle you calculated , θslip (21.8 degrees) . To keep the block from slipping, you apply a horizontal (parallel to the surface of Earth) force directed to the right on the block. Your horizontal force F→Yb has a magnitude of 45 N. Calculate the magnitude and direction of the force due to static friction for this new situation, assuming that the block does not slip. Enter a magnitude for this part, but consider what the sign of your answer tells you about the direction of the force.
1) Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the door. One child pushes with a force of 175 N at a distance of 0.400 m from the hinges, and the second pushes at a distance of 0.450 m. What force (in N) must the second exert to keep the door from moving? Assume friction is negligible. _____ N
1. A long, uniform rope with a mass of 0.135 kg per meter lieson the ground. You grab one end of the rope and lift it at theconstant rate of 1.13 m/s. Calculate the upward force you mustexert at the moment when the top end of the rope is 0.525 mabove the ground. Explain and labled the drawing.
Concept Simulation 9.1 illustrates how the forces can vary in problems of this type. A hiker, who weighs 897 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 4890 N, and rests on two concrete supports, one on each end. He stops 1/3 of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge (a) at the near end and (b) at the far end?
A 1.5 kg block is connected by a rope across a 50-cm-diameter, 2.0 kg pulley, as shown. There is no friction in the axle, but there is friction between the rope and the pulley; the rope doesn’t slip. The weight is accelerating upward at 1.2 m/s2. What is the tension in the rope on the right side of the pulley?
1.A 495 kg uniform beam is suspended by a vertically hanging rope at each end. The beam is tipped at an angle of 25.0 degrees with respect to the horizontal. A 105 kg construction worker stands at the very left end of the beam, as shown in the diagram below. (a)Let the system be the worker and the beam. On the diagram, label all of the external forces acting on the system, using arrows. b.Find the tension in the rope on the right side of the beam. Give your answer in Newtons. Assume the system is in static equilibrium. (c) Find the tension in the rope on the left side of the beam. Give your answer in Newtons. Assume the system is in static equilibrium.
Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the door. One child pushes with a force of 175 N at a distance of 0.500 m from the hinges, and the second pushes at a distance of 0.400 m. What force must the second exert to keep the door from moving? Assume friction is negligible. N
Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the door. One child pushes with a force of 175 N at a distance of 0.800 m from the hinges, and the second pushes at a distance of 0.450 m. What force must the second exert to keep the door from moving? Assume friction is negligible....................N
I need help with this practice problem. The answer key doesn't provide the free body diagram but it says b.) 0.9m from the other end, but I don't understand how to solve it. Two people (a child and parent) are sitting on a teeter-totter of length L = 3 m andmass m = 10 kg. There is a single support in the middle. The adult weighs m1 = 75 kg and thechild weighs m2 = 30 kg. (a) Draw a free body diagram. (b) If the child sits on the end of the teeter-totter, where must the adult sit to balance it?
Unlike most of the other muscles in our bodies, the masseter muscle in the jaw, as illustrated in the figure, is attached relatively far from the joint, enabling very large forces to be exerted by the back teeth. This is shown in the figure below, where a person is biting down on a bullet placed between the back teeth. (FM= 210 N and rR = 4.1 cm.) (a) Using the information in the figure, calculate the magnitude of the force exerted by the teeth on the bullet. (b) Calculate magnitude of the force on the joint.