A diver of weight 510 N stands at the end of a diving board of length L = 4.9 m and negligible mass (the figure). The board is fixed to two pedestals separated by distance d = 2.0 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? L (a) Number Units (b) Number Units
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- A wooden door 2.1 m high and 0.90 m wide is hung by two hinges 1.8 m apart. The lower hinge is 15 cm above the bottom of the door. The center of mass of the door is at its geometric center, and the weight of the door is 260 N, which is supported equally by both hinges. Find the horizontal force exerted by each hinge on the door.A diver of weight 570 N stands at the end of a diving board of length L = 4.5 m and negligible mass (see the figure below). The board is fixed to two pedestals separated by distance d = 1.2 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? ←d◄ LA diver of weight 550 N stands at the end of a diving board of length L = 3.6 m and negligible mass (see the figure below). The board is fixed to two pedestals separated by distance d = 1.4 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? (a) Number i Units (b) Number i Units d→ L
- A diver of weight 580 N stands at the end of a diving board of length L= 4.3 m and negligible mass (see the figure below). The board is fixed to two pedestals separated by distance d = 1.3 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? (a) Number (b) Number 368.9 948.9 Units Units TOENE N NA diver of weight 470 N stands at the end of a diving board of length L = 4.8 m and negligible mass (the figure). The board is fixed to two pedestals separated by distance d = 1.0 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? (a) Number Units (b) Number i UnitsA diver of weight 510 N stands at the end of a diving board of length L = 4.6 m and negligible mass (the figure). The board is fixed to two pedestals separated by distance d = 1.4 m. Take the upward direction to be positive. Of the forces acting on the board, what are (a) the force from the left pedestal and (b) the force from the right pedestal? (a) Number Units (b) Number Units d→ L
- A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.50 m long and weighs 500 N. At a certain instant the worker holds the beam momentarily at rest with one end at distance d =1.50 m above the floor, , by exerting a force on the beam, perpendicular to the beam. (a) What is the magnitude P? (b) What is the magnitude of the (net) force of the floor on the beam? (c) What is the minimum value the coefficient of static friction between beam and floor can have in order for the beam not to slip at this instant?A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 160 N. The coefficient of static friction between the foot of the ladder and the ground is 0.40. A man weighing 740 N climbs slowly up the ladder. (a) What is the maximum friction force, in Newtons, that the ground can exert on the ladder at its lower end? (b) What is the actual friction force, in Newtons, when the man has climbed 1.0 m along the ladder? (c) How far, in meters, along the ladder can the man climb before the ladder starts to slip?a diver of weight 580 N standing at the end of a diving board with a length of L =4.5 m and negligible mass. The board is fixed to two pedestals (supports) that are separated by distance d = 1.5 m. Of the forces acting on the board, what are the (a) magnitude and (b) direction (up or down) of the force from the left pedestal and the (c) magnitude and (d) direction (up or down) of the force from the right pedestal? (e) Which pedestal (left or right) is being stretched, and (f) which pedestal is being compressed?
- A beam with length of 2 m and a mass of 10 kg supports a 50 kg box. The beam is connected to a wall by a hinge at its base and a horizontal wire. The wire is connected to the beam 1.5 m from the hinge and makes an angle θ of 35o to the beam. The goal is to find the tension in the wire and the horizontal and vertical components of the force exerted by the hinge on the board. Suppose the maximum tension that the wire can withstand is 1500 N. What is the maximum load that the hinge can support before the wire breaks?A 73 kg man stands on a level bridge of length L. He is at distance L/4 from one end. The bridge is uniform and weighs 2.7 kN.What are the magnitudes of the vertical forces on the bridge from its supports at (a) the end farther from him and (b) the nearer end?A gymnast with mass 48.0 kg stands on the end of a uniform balance beam as shown in the figure. The beam is 4.70 m long and has a mass of 270 kg (excluding the mass of the two supports). Each support is 0.590 m from its end of the beam. In unit-vector notation, what are the forces on the beam due to (a) support 1 and (b) support 2? L (a) Number i| (b) Number j Units j Units N N 21