A woman of mass 58kg sits on the left end of a see-saw of length 4m, pivoted in the middle. A man of mass 85kg sits to balance the see-saw. Find the normal force exerted by the pivot if the plank has a mass of 12kg

Q: A spade is modelled as a uniform rod, of mass 2kg and length 90cm, attached to a uniform square…

A: Gardener is holding the spade horizontally. This shows that weight of spade = force by gardner’s…

Q: A 3.71m long stick with a uniform mass distribution is supported 1.78m from the left end of it.…

A: Given information: The length of the stick (l) = 3.71 m The distance from the left end at which the…

Q: A beam of negligible mass, supported by a hinge, holds two steel balls as shown in the figure.…

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Q: L.

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Q: e bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and…

A: Given values:- Biceps muscle connects to the bones of the forearm,(r0)=2.15 cm=0.0215 m -----(1)…

Q: A hungry bear weighing 730 N walks out on a beam in an attempt to retrieve a basket of goodies…

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Q: A door has a width of 1 m and a mass of 12 kg. The hinge attaches the door on the left. This time,…

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Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: Two children of mass 19 kg and 29 kg sit balanced on a seesaw with the pivot point located at the…

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Q: Three children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a…

A: When placed on the ends of a seesaw, children perform up and down motions in an arc, which is a part…

Q: Two children are balanced on a seesaw that has a mass of 13.0 kg. The first child has a mass of 26.0…

A: Mass of seesaw (M) = 13 kg Mass of first child (m) = 26 kg Distance of first child from pivot (d) =…

Q: A weight of 6 N is located 11 cm from the fulcrum on the beam of a simple balance. What weight…

A: Weight located on one of the side of the fulcrum (W1)=6 N Distance of weight from the fulcrum…

Q: A heavy block of a mass of M = 71 kg is attached to the left end of a horizontal beam (beam's mass m…

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Q: Air within the funnel of a large tornado may have a pressure of only 0.29 atm. What is the…

A: Calculate the absolute pressure on wall. P=0.29 atm=0.291.013×105 Pa=29377 Pa

Q: A child with a mass of 24.3 kg sits on a see-saw, 2.75 m from its center (on its fulcrum). How far…

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Q: A beam resting on two pivots has a length of L = 6.00 m and mass M = 77.0 kg. The pivot under the…

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Q: A uniform rod of mass 500. g is used as a balance. We want to balance a 2.00-kg weight on the left…

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Q: A 4.8 m ladder rests against a wall as shown. The ladder has a mass of 26.4 kg. A 57.6 kg person…

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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 board has its mass of 30.0 kg uniformly distributed along its' length of 4.00 m. The board sits on…

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Q: Consider a see-saw with a total length of 8 m. A child with a mass of 31 kg sits on the very end of…

A: The free-body diagram of the see-saw is shown below.

Q: Consider a see-saw of total length 5.40m balanced at its center of mass, with a child of mass…

A: Draw the free-body diagram of the system.

Q: d. A box of mass 23kg sits on the bar at a distance of 3.8m from the left end. TI oported by a cable…

A: Given:- The length of the bar is L = 7.5 m  The mass of the bar is M = 24 kg  The mass of the box is…

Q: Two people are sitting on either side of a seesaw. One has mass m and is sitting x meters from the…

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Q: A sign for a pizza restaurant hangs from a 2.60-m long rod extended out from a building. A cable,…

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Q: 13. A boy of mass 50 kg is at rest on a uniform plank of mass 40 kg. If AB = 1 m, BC = 3 m and…

A: Given:- The mass of the boy is M = 50 kg  The mass of the plank is m = 40 kg  The length of the…

Q: A uniform plank of length 5 m and weight 200 N rests horizontally on two supports with 1.1 m of the…

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Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: A horizontal beam of length 2 m and mass 8.0 kg has a mass of 5.0 kg and width 0.8 m sitting at the…

A: The data given in the system is, A. Beam a. Mass, mb=8 kg b. Length, l=2 m B. Block a. Mass of the…

Q: A board of mass 3.0Kg serves as a seesaw for two children. Child A has a mass of 40Kg and sits 2.5m…

A: mass of child A = 40 kg mass of child B = 25 kg distance of child A from pivot point = 2.5 mdistance…

Q: 75.0-kg and 5.00-m plank is supported by two fulcrums (take the left end to be the origin x=0). When…

A: 75.0-kg and 5.00-m plank is supported by two fulcrums (take the left end to be the origin x=0). When…

Q: A sign for a pizza restaurant hangs from a 2.60-m long rod extended out from a building. A cable,…

A: Given, Length of the rod=2.6 m mass of the signal board=9.4 kg The angle between the building and…

Q: A 13.6 kg. 3.6 m long seesaw bar (assume that the bar is uniform) is perfectly balanced upon a…

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Q: In the figure below, the cg of the pole held by the pole vaulter is 2.54 m from the left hand, and…

A: a) Balancing moment about left hand ∑F = 0.733 FR - (2.54 x 3.32 x 9.8) => FR = 112.7 N     ( the…

Q: gymnast with a mass of 54 kg stands on the end of a uniform balance beam as shown in the figure.…

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Q: A see-saw consists of a uniform board with mass 43.6kg and length l = 2.01m. It supports two friends…

A: For the see-saw to balance, the torques due to the forces acting on either sides should balance each…

Q: Consider a teeter-totter that is made out of pine, shown below. A pineapple sits on one side of the…

A: Mass of the pineapple =mp=132gram Distance to pivots for the pineapple=dp=2.63m Mass of the Apple…

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.