4) A father (80 kg), mother (56 kg), daughter (16 kg) and son (24 kg) try to occupy seats on the seesaw shown below so that the seesaw is in equilibrium. Can they succeed? If so, where do they need to sit? Explain your process.

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Two children of mass 21 kg and 26 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 2 m, at what distance from the pivot point is the small child sitting in order to maintain the balance? m

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A child with a mass of 11 kg sits at a distance of 1 m from the pivot point of a seesaw. Where should a 15 kg child sit to balance the seesaw?m (from the pivot point)

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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…

The maximum load that can be supported by a crane is determined by the torque that the load exerts about the pivot point of the crane. If a certain crane is rated to support a load of 1000kg at a distance of 10m from its main tower, how large a load can it support at a distance of 40m from its main tower? See figure. 10 m 40 m O 250 kg O 4000 kg O 1000 kg O 2000 kg O 500 kg

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Q) A simplified model as shown in figure below of a planar robotic am. You may assume that each segment has length 1.5 m, and the applied force is 250 N. 0, = 35" and 02 = 0; = 20°. Calculate the moment that the force, F, exerts about the point A. F 0: A