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A weight hangs on a frictionless pulley as shown in the figure.
a.) What is the tension on the pulley strut?
b.) What is the value of angle B?
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- Suppose you use an ideal pulley of the type shown in image (a) in the figure below to support a car engine of mass 140 kg. a. What would be the tension in newtons in the rope? b. What force in newtons must the ceiling supply, assuming you pull straight down on the rope? Neglect the pulley system's mass.A 75-kg man stands on his toes by exerting an upward force through the Achilles tendon, as in Figure. (a) What is the force in the Achilles tendon if he stands on one foot? ( b) Calculate the force at the pivot of the simplified lever system shown—that force is representative of forces in the ankle joint.A leg is suspended in a traction system, as shown below. (a) Which pulley in the figure is used to calculate the force exerted on the foot? (b) What is the tension in the rope? Here T ⃗ is the tension, w ⃗ leg is the weight of the leg, and w ⃗ is the weight of the load that provides the tension.
- If you used an ideal pulley of the type shown in Figure shown(a) to support a car engine of mass 115 kg , (a) Whatwould be the tension in the rope? (b) What force must the ceiling supply, assuming you pull straight down on the rope? Neglect the pulley system’s mass.A massless, horizontal beam of length L and a massless rope support a sign of mass m (see figure below). (a) What is the tension in the rope? (Use the following as necessary: m, g, d, L, and ?.) (b) In terms of m, g, d, L, and ?, what are the components of the force exerted by the beam on the wall? (Assume that the +x-axis is to the right and the +y-axis is up along the page.)A picture frame is hung using two cords on a wall, as illustrated in the figure. If the mass of the frame is 350 g: (i) Calculate the tension in each of the cords? (ii) If the left string is cut what is the tension in the right string?
- A boy sits in a tire that is attached to a rope that passes over a pulley fastened to the ceiling and then passes back down to the boy's hands. The weight of the boy plus the tire is W. What is the force with which the boy must pull on the free end of the rope to support weight in the tire?A 150 kg man stands on the middle of a 50 kg ladder as shown. Assuming floor and wall are perfectly smooth and that slipping is prevented by a string DE. A) What is the reaction at B? B) What is the reaction at A? C) What is the tension in the string DE?Suppose you use an ideal pulley of the type shown in image (a) in the figure below to support a car engine of mass 140 kg. (a) What would be the tension in newtons in the rope? N (b) What force in newtons must the ceiling supply, assuming you pull straight down on the rope? Neglect the pulley system's mass. N
- Q1. A 750-pound boat sits on a ramp inclined at 60 degree, what force is required to keep the boat from rolling down the ramp?A runner pushes against the track, as shown. (a) Provide a free-body diagram showing all the forces on the runner. (Hint: Place all forces at the center of his body, and include his weight.) (b) Give a revised diagram showing the xy-component form.An archer must exert a force of 340 N on the bowstring shown in Figure (a) such that the string makes an angle of ? = 30.5° with the vertical. Two diagrams show a bow oriented vertically, with the midpoint of the bowstring pulled to the right. In both diagrams, the top half of the bowstring starts at the top limb and extends down and to the right to the midpoint of the string, and makes an acute angle of ? with the vertical. The bottom half of the string appears to make the same angle with the vertical. In the first diagram, a force arrow points from the midpoint of the string to the right. In the second diagram, the left end of a horizontal spring with spring constant k is attached to the midpoint of the string. The right end of the spring is attached to a vertical wall. (a) Determine the tension in the bowstring. N(b) If the applied force is replaced by a stretched spring as in Figure (b) and the spring is stretched 28.5 cm from its unstretched length, what is the spring constant?…