A person lifts a 8-kg dumbbell. The combined mass and length of his hand and forearm are 4 kg and 0.4 m respectively. Determine the force exerted by his muscles 0.01 m from the pivot point? Assume that the center of gravity of the forearm is in the middle.

Q: A uniform 150-q beam is 1 meter long. If the fulcrum is placed 20 cm from the left end of the beam,…

A: Given data:  Weight of beam (Fbeam) = 150 g Distance of beam centre of gravity from fulcrum (rb) =…

Q: Q2: Man A weighs 150 N and man B weighs 200 N. They desire to find the weight and position of the…

A: The position of the center of gravity is the point where the objects are in the static equilibrium.…

Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 471 N…

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Q: Assuming a single muscle group (biceps) is responsible for carrying a ball with a weight of 5 kg as…

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Q: As shown below, on Mercury a 43 kg beam of length L is leaning against a frictionless wall and is in…

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Q: The rear wheels of a truck support 57.0% of the weight of the truck, while the front wheels support…

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Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 484 N…

A: Weight of the head, upper torso, arms and hands together is: Center of the gravity of the head,…

Q: A man holds a 179-N ball in his hand, with the forearm horizontal (see the figure). He can support…

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Q: A man holds a 164-N ball in his hand, with the forearm horizontal (see the figure). He can support…

A: No force is acting along the horizontal. Thus, the force by the upper arm bone to the forearm will…

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: A 20-m ladder weighing 100 N rests against a vertical wall at a point 16 m above the ground. The…

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Q: An aircraft should have more than one center of gravity to balance it during take-off, flight, and…

A: An aircraft should not have more than one center of gravity to balance it during take-off, flight,…

Q: A door weighing 310.0 N measures 2.00 m x 3.00 m and is of uniform density; that is, the mass is…

A: The value of P is 7.50.The value of Q is 310.0.The position of forces acting on the door is shown…

Q: A non-uniform rod is horizontal, and has one end at x = 0 and the other end at x = 20 m. In order to…

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Q: A 900 N man, 165 cm tall lies on a center of gravity reaction board with his feet at the left end.…

A: Given-Weight of man BW =900 NHeight of man BH =165 cmLength of reaction board L=206 cmWeight of…

Q: A man holds a 164-N ball in his hand, with the forearm horizontal (see the figure). He can support…

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Q: In the figure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of…

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Q: the horizontal arm is composed of 3 parts. the upper arm weight is 17.5N and the distance from the…

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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: In the figure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of…

A: Given that: AA=2.3ABEA=1.8EBLet the weight of the brick is W.

Q: small airplane is sitting at rest on the ground. Its center of gravity is 2.58 m behind the nose of…

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Q: A man holds a 175-N ball in his hand, with the forearm horizontal (see the drawing). He can support…

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Q: In the figure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of…

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Q: A box of negligible mass rests at the left end of a 2.00 m, 29.0 kg plank (Eigure 1). The width of…

A: The length of the plank is L = 2.00m the mass of the plank is m = 29.0kg The width of the box is w =…

Q: A man holds a 161-N ball in his hand, with the forearm horizontal (see the figure). He can support…

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Q: A uniform beam of mass m = 140.0 kg and length L = 2.40 m is supported by two columns at each end.…

A: Given data The mass of the uniform beam is m = 140 kg The length of the beam is L = 2.40 m The mass…

Q: A person carries a plank of wood 2.00 m long with one hand pushing down on it at one end with a…

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Q: wo paramedics are carrying a patient through a uniform spinal board. The board is 84 m long, has a…

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Q: A rod AB weighing 25 kN is supported by a pin at A and a cable BD. The center of gravity of the rod…

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Q: A 75.0 kg passenger on a cruise ship leans forward into a strong horizontal headwind. When her…

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Q: connected to the beam a distance L = 5.0 m from the wall, at an angle 0 = 30° as shown in the…

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Q: A man holds a 165-N ball in his hand, with the forearm horizontal (see the figure). He can ypport…

A: Given: Weight of ball, Wb = 165 N Weight of forearm, Wf = 18.5 N distance between elbow joint and…

Q: Find the x and y-coordinates of the center of gravity of a 4.00-ft by 8.00-ft uniform sheet of…

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Q: A person’s weight is 438 N is standing on a level floor and have a center of gravity that is 1.28 m…

A: Given data: Weight of the person, Wp=438 N Center of gravity of person, Xp=1.28 m Weight of his…

Q: U.S. nickels have a mass of 5.00 g and are 1.95 mm thick. If you stack 3 nickels on a table, how far…

A: Stacked coins can be considered to form a uniform density cylinder. Since, the staked coins forms a…

Q: Two friends are carrying a 200 kg crate up a flight of stairs. The crate is 1.25 m long and 0.500 m…

A: Force due to weight is in vertical downward direction.weight of body of mass m is, W=mgFor the…

Q: A 10cm uniform rod has a mass of 100g. Attached at its ends are 200g and 100g rubber balls. Where is…

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Q: Find the x- and y-coordinates of the center of gravity of a 4.00-ft by 8.00-ft uniform sheet of…

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Q: A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 438 N…

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Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.