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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A ladder 2.00 m long, weighing 234 N, initially lies flat on the ground The ladder is raised to a vertical position Compute the work done by the force lifting the ladder. The ladder's center of gravity is at it geometric center?
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- I need help with this problem pleasearrow_forwardThe diagram shows a 7.0 meter log leaning on a rock. The wieght of the log is 780 Newton's. A 200 Newton boy walks up the log from the point where is touches the ground. He finds that he can only walk 5.0 meters up the log before it starts to tip over the rock WHrer is the center of gravity of the log located?arrow_forwardA person on horseback is on a drawbridge which is at an angle = 20.0° above the horizontal, as shown in the figure. The center of mass of the person-horse system is d = 1.00 m from the end of the bridge. The bridge is = 7.09 m long and has a mass of 1,920 kg. A cable is attached to the bridge 5.00 m from the hinge and to a point on the wall h = 12.0 m above the bridge. The mass of person plus horse is 1,260 kg. Assume the bridge is uniform. Note that the drawing is not to scale and you may not assume that the cable is perpendicular to the bridge. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) ITALIACHTAI AVUTA É (a) Determine the tension in the cable (in N). N (b) Determine the horizontal force component (in N) acting on the bridge at the hinge. magnitude direction -Select-v 11.08 N -Select-- (c) Determine the vertical force component (in N) acting on the bridge at the hinge. magnitude N…arrow_forward
- The two ends of the dumbbell shown below are made of the same material. Is the dumbbell’s center of gravity at point 1, 2, or 3? Explain.arrow_forwardThe diagram shows a thin rod of uniform mass distribution pivoted about one end by a pin passing through that point. The mass of the rod is 0.540 kg and its length is 1.20 m. When the rod is released from its horizontal position, it swings down to the vertical position as shown. Ĵ L/2 CG M (a) (a) Determine the speed of its center of gravity at its lowest position in m/s. m/s (b) When the rod reaches the vertical position, calculate the tangential speed of the free end of the rod in m/s. m/sarrow_forwardSubject: physicsarrow_forward
- What is the horizontal distance of the center of gravity of the person-ladder system from the point where the ladder touches the ground?arrow_forward11.15 • The boom shown in Figure E11.15 Fig. E11.15 weighs 2600 N and is attached to a frictionless pivot Guy wire at its lower end. It is not uni- Boom form; the distance of its center of gravity from the pivot is 35% of its length. Find (a) the ten- sion in the guy wire and (b) the horizontal and vertical com- 60.0° ponents of the force exerted on 5000 N.arrow_forwardA balance has a 5.0kg object at 0.5m from the fulcrum, and a 20.0kg object a certain ways in the opposite direction from the fulcrum. Where would the 20.0kg object need to be for the system to be balanced? Suppose you placed the 20.0kg object at 0.5m away from the fulcrum in the opposite direction of the 5.0kg object. This would result in an unbalanced system. Where could you then place a 10kg object to rebalance the system?arrow_forward
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