50 lb 6 in.→ 20 lb 40 lb 6 in. D – 6 in.→ 50 lb
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A 6 × 12-in. plate is subjected to four loads as shown. Find the resultant of the four loads and the two points at which the line of action of the resultant intersects the edge of the plate.
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- A person with a 800 N weight is standing 2 meters from the left of a five meter wide uniform plank that weights 1200 N. The plank is held by two verticla ropes on either end. What are the tensions of both ropes?The figure below shows a horizontal rod, of length 7.4 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. *a) What is the net torque (in N · m) on the rod about an axis through O perpendicular to the page? magnitude= ____N · m direction= clockwise or counter clockwise (b)What is the net torque (in N · m) on the rod about an axis through C perpendicular to the page? magnitude= ___ N · m direction= clockwise or counter clockwisePlease help me
- A uniform tabletop with a mass of 415kg has a length of 2.50m. A 775kg box is placed 0.800m from one side of the table and a 265kg box is placed 1.80m from the same side of the table. What are the forces from the table legs on the tabletop?A house painter is standing on a uniform, horizontal platform that isheld in equilibrium by two cables attached to supports on the roof.The painter has a mass of 75.0 kg and the mass of the platform is 20.0kg. The distance from the left end of the platform to where the painteris standing is d = 2.00 m and the total length of the platform is 5.0 m.(a) How large is the force exerted by the left hand cable? (b) Howlarge is the force exerted by the right hand cable? [Hint: You can placeyour axis in any convenient location if the object is not rotating.]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 600-kg uniform I-beam supports the load shown. Determine the reactions at the supports. Answers: Ax Ay = = By = p -7.5 m- +4.5 m 285 kg N N N BA horizontal 8 kg plank is 3.0 m in length and has its center of mass at the geometrical center. A 2 kg mass is placed 1.0 m from one end and the plank is supported from the ends. Calculate the forces of support. 1.0 m 2 kg 3.0 mAn 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 = 237 N, D = 43 cm and d = 5.2 cm.) Quadriceps tendon 60° W