A 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
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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 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 N
- A 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 = 4.9 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 Unitsa 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 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→ LA 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 21A 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 beam with a 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 boardA 14.0 m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 63.0°-angle with the horizontal. (a) Find the horizontal and vertical forces (in N) the ground exerts on the base of the ladder when an 820-N firefighter has climbed 4.10 m along the ladder from the bottom. horizontal force magnitude 247 2 direction vertical force magnitude. 1310 direction up towards the wall N ✓ ✓ N (b) If the ladder is just on the verge of slipping when the firefighter is 9.30 m from the bottom, what is the coefficient of static friction between ladder and ground? 0.333 ✓ (c) What If? If oil is spilled on the ground, causing the coefficient of static friction to drop to half the value found in part (b), what is the maximum distance (in m) the firefighter can climb along the ladder from the bottom before the ladder slips? 3.125 xmConsider a rigid steel beam of length L = 11.5 m and mass mb = 405 kg resting on two supports, one at each end. A worker of mass mw = 76 kg sits on the beam at a distance x from support A. Refer to the figure. a)When the worker sits at a distance x = 4.5 m from support A, calculate the force, in newtons, that support B must exert on the beam in order for it to remain at rest. Use g with three significant figures. b)The force exerted on the beam by support A is measured and found to be FA = 2180 N. At what distance x, in meters, from support A is the worker sitting now?