A alank of wood is fixed to a wall using a hinge. When the angle between the plank and the wall is 45°, a spring isattached to the wood 25cm from the hinge and fixed to the wall so that it is horizontal (Diagram A). The wood is thenpushed downwards until it is perpendicular to the wall (Diagram B).The force exerted by the spring, depends on its length. As the spring stretches, the force it exerts increases. A graphshowing this relationship is below.70Diagram B60Diagram Aspring5090°2025cm4590°1025cmhinge103515202530Spring Length (cm)(a) Calculate the length of the spring in Diagrams A and B.(b) Calculate the torque produced by the spring on the plank ofcompare the values.around the hinge in 4oth Diagrams A and B andForce (N)

Given: The length between the hinge point and spring (along the plank) is 25 cm. (a) In diagram A,…

Answered: A plank of wood is fixed to a wall…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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mb: L d- ms A horizontal L=1.2 m long mb=12 kg uniform bar is hinged on the left end and pulled at the right end by a cable. The cable makes 31° angle with horizontal. A 18 kg store sign is suspended below the bar at d=0.18 m from the right end. Find the magnitude of vertical hinge force.
A uniform aluminum beam 9.00 m long, weighing 300 N,rests symmetrically on two supports 5.00 m apart (Fig. ). A boyweighing 600 N starts at point A and walks toward the right. (a) In thesame diagram construct two graphs showing the upward forces FA andFB exerted on the beam at points A and B, as functions of the coordinatex of the boy. Let 1 cm = 100 N vertically and 1 cm = 1.00 m horizontally.(b) From your diagram, how far beyond point B can the boy walkbefore the beam tips? (c) How far from the right end of the beam shouldsupport B be placed so that the boy can walk just to the end of the beamwithout causing it to tip?
a) Draw the free-body diagrams of pulley C and of block E separately. b) Calculate the following: gridinion! the magnitude of tension forces along cables CAD and ACB, Slugmo the mass of block E, ME, mont • and the spring constant, k. patinlog.431 93 80 anil Juods insmo m (SA 1.5 ft 1 ft U D 50° 2 ft beniamos terb salsa binowB 35° C E am Sta Juoma 100.0 8.0 T.0 mao ISTOG ed oj
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You are sitting in a chair and you are ready to kick a soccer ball from a sitting position using only your quadriceps muscles to rotate your knee. Be sure you will not pivot your hips, as you are sitting in the chair; we want to simplify this problem to include only rotating your lower leg at the knee joint and keeping your thigh firmly fixed to the seat. For our purposes, your quadriceps muscles can be treated as a single string that exerts a tension on the knee at a right angle from a lever arm of 2.00 cm. The knee is connected to a plausible 50.0 cm lower leg as measured from the pivot point of the knee to the contact point where we will kick the ball.Before we kick it, we would like to balance the ball on our contact point (at our ankle, say) 50.0 cm away from the pivot point of the knee by extending the lower leg straight out (upper leg aligned with the lower leg). The soccer ball has a mass of 400 grams. We will neglect all mass of all parts of the leg here for brevity c) We now…
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Assume the image below is your arm and you are lifting a 15 lb weight. your arm is now at a 50-degree angle to your body. The force from the muscle is vertical. The weight of your arm is 5 lbs. dbiceps is 2cm and dball is 6cm. Please draw a free body diagram of the arm at that 50-degree angle with the forces. What is the force that the muscle puts on the arm? What is the force from the muscle if the weight is all the way up?
a) Let's start with a simplified model where both M, and M₂ are applied perpendicular to the moment arm. The moment arm lengths are d₁ = 3 cm, d₂ 15 cm, and d3 = 34 cm. M₁ M₂ da W Calculate the ratio of the mechanical advantage of the brachioradialis(M₂) to the mechanical advantage of the biceps(M₁). Ratio of Mechanical Advantage MA2 -) = 5 MA1
BME 101 Introduction to Blomedical Engineering Final s)A massless bar AC is supported by a pin joint at A and cable CD. Mass m is suspended from bår AC at point B, as shown. Given m-50kg and the following dimensions: AB = 1m, BC 3m, angle ACD 30 degrees a. Draw a free body diagram for bar ABC. b. Find the tension in cable CD. D.

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