Where should the pivot be placed so that the board is balanced, ignoring the board's mase? A78 kg adult sits at one end of a 7.2 m long board. His 20 kg child sits on the other end. Express your answer using two significant figures. m from adult Submit Previous Answers Beauest Answer X Incorrect; Try Agaln; 2 attempts remalning • Part B Find the pivot point if the board is uniform and has a mass of 16 kg Express your answer using two significant figures. m hom adult

The maximum force in each rod can not exceed 1540 N Figure 1m 14 12 m 3 m 2m 1m 2m O 2 m 3m Part A Determine the greatest mass of the crate that can be supported. (Figure 1) Express your answer to three significant figures and include the appropriate units. Wmar = Submit HA Value < Return to Assignment 4 Request Answer ✔ Units Provide Feedback wwww ? D

A 164-cm-tall person lies on a light (massless) board which is supported by two scales, one under the top of her head and one beneath the bottom of her feet. The two scales read, respectively, 35.1 and 31.6 kg. (Figure 1) Part A What distance is the center of gravity of this person from the bottom of her feet? Express your answer to three significant figures and include the appropriate units. for Part A for Parte do for Part redo foPart A reetfor Part A keyboard shortcuts for Part A help for Part A d= Submit Value Units Units input for part A Previous Answers Request Answer

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…

Don't Use Chat GPT Will Upvote And Give Handwritten Solution Please

Help?

You are on a pirate ship and being forced to walk the plank. You are standing at the point marked C. The plank is nailed onto the deck at point A, and rests on the support 0.75 m away from A. The center of mass of the uniform plank is located at point B. Your mass is 70 kg and the mass of the plank is 40 kg. Part A What is the minimum downward force the nails must exert on the plank to hold it in place? Express your answer using two significant figures. 10 ΑΣΦΑ ? N 1 0.75 m 3.0 m- 1.5m B jc