Effective location 30° of erector spinae muscles Center of gravity of head and arms 12° Center of gravity of upper torso Pivot FIGURE P8.68

Q: See Figure 2. A block with mass m₁ = 2 kg starts from rest, slides down a height h = 1 m, and then…

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Q: A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm…

A: Given data: Mass of the rock (m) = 525 kg Applied force (F) = 711 N According to the condition of…

Q: A 35 N forearm (we are ignoring the hand for this problem) are held at a 45 deg angle to the…

A: Given data- A 35 N forearm are held at a 45 deg angle to the vertically oriented humerus. The COM of…

Q: One person was doing a knee extensor muscle training, he used a dumbbell (mass = 10.2 kg) strapped…

A: The objective of this question is to calculate the force that the knee extensor muscle must produce…

Q: A small airplane with full fuel tanks, but no occupants or baggage, has a mass of 1.17 x 103 kg and…

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Q: An individual leans forwards to pick up a box of 100 N. The weight of his upper body has a magnitude…

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Q: A 400 N, 8 meter long rod is attached to a wall and supported by a cable as shown below.  A 27 kg…

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Q: John is performing an isometric contraction of the quadriceps to hold a 500 N weight at an angle of…

A: Given, weight W=500angle θ=450l=42.5 cmd=10mm

Q: A store's sign has a mass of 20 kg and is 3.0 m long. It is uniform, so its center of gravity is at…

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Q: f mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance…

A: Given:-  The mass of the meter stick is M  The mass of the empty can is m hanging from one end.  The…

Q: A bar with a mass of 30 kg is 3.0 m long. It is uniform, so its center of gravity is at the center…

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Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 435 N…

A: according to the question x1=1.33 mw1=435 Nx2=0.714 mw2=134 Nx3=0.201 mw3=83.1 N

Q: Suppose a 417 kg alligator of length 3.3 m is stretched out on a board of the same length weighing…

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Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is…

A: We are given the meter scale. We are given a weight hanging on one side. We are also given distance…

Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is…

A: Given: The length of the meter stick is L=100 cm, The weight of block 1 is W1=21 N, The weight of…

Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is…

A: Ans wer :- a) We need to cancel the moments from each of the blocks. Let the block be placed at x…

Q: One person was doing a knee extensor muscle training, he used a dumbbell (mass = 10.2 kg) strapped…

A: Ans is in imageExplanation:Step 1: Step 2: Step 3: Step 4:

Q: Find the x- and y-coordinates of the center of gravity for the boomerang as in (a) of the figure…

A: Length , L = 0.232 mMass, m = 0.290 kgTo find = x and y co-ordinates of center of gravity of the…

Q: In exercise physiology it is sometimes important to determine the location of a person's center of…

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Q: A uniform 1.0-N meter stick is suspended horizontally at the middle. A 2.0-N weight is suspended…

A: length of meter stick is 1m  Let w1 = 2.0 N r1 = 10 cm from the stick let weight of 500 grams (0.5…

Q: Many aspects of a gymnast's motion can be modeled by representing the gymnast by four segments…

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Q: ould therefore exert a force to keep the head erect. That is why your head falls forward when you…

A: Solution: Given that  w = 55 N, r1 = 4.8 cm, and r2 = 2.9 cm.) magnitude N direction (upward,…

Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 3.74 g coins…

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Q: In the figure , the center of gravity (CG) of the pole held by the pole vaulter is 1.85 m from left…

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Q: A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm…

A: Given, d = 0.255 mmass of the rock, m 405 kgmaximum force applied on the other end of the rod, F=…

Q: The main muscles that hold your head upright attach to your spine in back of the point where your…

A: Given: On February 20, 1962, John Glenn made the first U.S.-manned flight around the Earth for three…

Q: Two objects of mass m1= 2kg and m2 = 7kg are connected by a light string that passes over a…

A: Given: m1=2 kgm2=7 kg The free-body diagram is given below.

Q: You can find the center of gravity of a long ruler by resting it horizontally on your two index…

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Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is…

A: Given:  Length of meter scale is 100 cm. Center of gravity (CG) is at 50 cm mark. 24 N block is at…

Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.