8. A 20 kg uniform beam 10m long is attached to a wall with a cable. The Cable 40.0 cable is attached to the middle of the beam at 90° to the beam. A box box of mass 50 kg is suspended from the beam as shown. 500 a. Draw a free body diagram labelling all the forces acting on the beam (include the forces acting on the floor hinge). Choose and label an appropriate pivot point "P". Label all distances from this point. b. Determine the tension in the cable. с. Determine the force acting on the hinge at the bottom.

Please answer the question in the picture below. Thank you so much for your help!!

A uniform 10.0 m ladder of weight WL=375 N leans against a frictionless wall. There is a force of static friction between the floor and the bottom of the ladder. A person weighing Wp stands 7.4 m between the bottom of the ladder.  Draw a free body diagram for the ladder. Draw a torque diagram for the ladder.  Determine the force that the wall exerts on the top of the ladder. Determine the force of static friction exerted on the ladder by the floor.

Statics and Torque 1. The figure shows a pair of forceps used to hold a thin plastic rod firmly. If the thumb and finger each squeeze with a force of Fr= FF= 11.0 M, what force do the forceps jaws exert on the plastic rod? Jaws Rod FT 8.50 cm 2.70 cm 2. A 75-kg adult sits at one end of a 9.0-m-long board. His 25-kg child sits on the other end. (a) Where should the pivot be placed so that the board is balanced, ignoring the board's mass? (b) Find the pivot point if the board is uniform and has a mass of 15 kg. 3. Calculate FA and Fg for the beam shown below. The downward forces represent the weights of machinery on the beam. Assume the beam is uniform and has a mass of 280 kg. FA 4300 N 3100 N 2200 N F 4.0 m-3.0 m 2.0 m 1.0 m 4. Three children are trying to balance on a seesaw, which includes a fulcrum rock acting as a pivot at the center, and a very light board 3.2 m long. Two playmates are already on either end. Boy A has a mass of 45 kg, and boy B a mass of 35 kg. Where should girl…

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What is the student’s weight?

1. The figure below shows the normal configuration of the head with proper posture. The center of mass for the weight of the skull is labeled W and the muscles that attach to the back of the skull are labeled M. Assume all quantities are correct to 2 significant figures. M W a) Determine the mechanical advantage of the skull muscles when d₁ 20 mm and d₂ = 26 mm. Hint: Which force on the fulcrum (rotation point) is the effort, and which is the load? Enter to 2 significant figures Mechanical Advantage: b) Improper posture and positioning of the head can lead to muscle tension headaches. If the head begins to shift forward while studying or reading, the center of mass moves further from the fulcrum or pivot point. It is a subtle change, but the figure below shows the head shifted forward. The center of mass for the weight of the skull is labeled W and the muscles that attach to the back of the skull are labeled M. Determine the new mechanical advantage of the skull muscles when d₁ = 16 mm…

A 12 000-N shark is supported by a rope attached to a 4.60-m rod that can pivot at the base. (a) Calculate the tension in the cable between the rod and the wall, assuming the cable is holding the system in the position shown in the figure. (Give you answer to three significant digits.) b) Find the horizontal force exerted on the base of the rod magnitude ------- N c) Find the vertical force exerted on the base of the rod. Ignore the weight of the rod. magnitude ------ N

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