A schoolyard teeter-totter with a totallength of 6.4 m and a mass of 41 kg is pivoted at its center. A 21-kgchild sits on one end of the teeter-totter. (a) Where should a parentpush vertically downward with a force of 210 N in order to hold theteeter-totter level? (b) Where should the parent push with a force of310 N? (c) How would your answers to parts (a) and (b) change if themass of the teeter-totter were doubled? Explain

Q: A meter stick (a uniform thin rod of length 1.0 m and mass 0.30 kg) is placed on a fulcrum at the 61…

A: Let l denotes the meterstick length, m denotes the meterstick mass, r denotes the pivot distance, x…

Q: A mother leans horizontally over the crib to lift her 18.8 kg baby. The moment arm of the baby about…

A:

Q: A meterstick is balanced on a fulcrum at its center.  Then a 310 N weight is placed 20 cm to the…

A: Given data:  Weight (W1) = 310 N Placed at (r1 ) = 20 cm, to the left of centre  Weight (W2) = 150 N…

Q: At the gym, you notice a girl doing a “plank.” In this exercise, she holds the position shown…

A: ...

Q: A 60-kg grandfather and his 30-kg granddaughter are balanced on a seesaw. If the grandfather is…

A: Given The mass of grandfather is mf=60 Kg. The mass of granddaughter is md=30 kg. The distance…

Q: A meter stick (a uniform thin rod of length 1.0 m and mass 0.33 kg) is placed on a fulcrum at the 68…

A: Length of meter stick = 1 m mass of meter stick = 0.33 kg location of center of mass of stick = 0.5…

Q: ontal boom with a weight of 165 N sticks s hang from a point 5 m from the right hand end. cable at a…

A: Given:- The weight of the  boom  Wb = 165 N  The length of the boom L = 10 m  The  weight of the…

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 diving board 3.00 m long is supported at a point 1.00 m from the end, and a diver weighing 500 N…

A:

Q: A person bending forward to lift a load “with his back”(Fig. P8.23a) rather than “with his knees”…

A: Given data:W1 = 200 NW2 = 350 N

Q: A person bends forward to hold a dumbbell of 10.0-kg. The spine and upper body are pivoted at the…

A:

Q: The sian Shown in Fia 7.48 is 4.00m long weighs 155ON, and is made of uniform materiale A weight of…

A:

Q: A uniform ladder is tilted against a smooth wall at an angle 60⁰ with the horizontal. The mass of…

A:

Q: In the figure, a 60 kgkg man walks out on a 14 kgkg beam that rests on, but is not attached to, two…

A: Given :-  mass of man = 60 Kg mass of beam = 14 kg

Q: The arm of a crane at a construction site is17.0 m long, and it makes an angle of 16.8◦with the…

A:

Q: A 5.2-kg bowling ball rests on a uniform beam of length I and mass M, as in the figure. The beam is…

A:

Q: Figure P8.29 shows a uniformbeam of mass m pivoted atits lower end, with a horizontalspring attached…

A: a)The mass of the beam is m, horizontal angle is ϴ and distance of the spring is d.

Q: A window washer stands on a uniform plank of mass 125 kg and length 7m supported by a rope attached…

A: 4018 N

Q: 2. A scaffold of mass 60 kg and length 5.0 m is supported in a horizontal position by a vertical…

A:

Q: An 700N window cleaner stands on a 3.0 m uniform scaffold that weighs around 400 N. It is supported…

A: Write a given values of this question. Draw a free body diagram. T=540NL=3m Weight of scaffold is…

Q: An 2992 N beam is loaded with two file cabinets (labeled 1 & 3) and hoisted at a constant velocity…

A:

Q: A mechanic is screwing a bolt and applies a force ?⃗ of magnitude 12.0 N to the end of the wrench.…

A: The torque τ be defined as, τ→=r→×F→r→=rFsinθ Where, r is distance. F is force.

Q: The meterstick weighs 10N. If a rock hangs on one end and the whole system is balanced at the 20 cm…

A:

Q: he figure shows an outstretched arm (0.61 m in length) that is parallel to the floor. The arm is…

A:

Q: A 198 kg, 5 m long beam sits on top of two posts.  A 3 kg pail sits 0.7 m from the left edge of the…

A: SOlution:

Q: A hungry 800-N bear walks out on a beam in an attempt to retrieve some "goodies" hanging at the end.…

A:

Q: We have two masses balanced on a centered beam on a fulcrum. If m1 = 10 kg, and m2 = 20 kg, what…

A: Given data The first mass is: m1 = 10 kg The second mass is: m2 = 20 kg The length of the first arm…

Q: (a) When opening a door, you push on it perpendicularly with a force of 35.0 N at a distance of…

A:

Q: he bar is 10m long. A mass of 40 kg is placed at 9m from the left of the bar. where should a 60 kg…

A: SOlution:' Given that m1 = 40 kg x1 = 9 m x = 10 m m2 = 60 kg

Q: nonuniform, 80.0-g, meterstick balances when the support is placed at the 51.0-cm mark. At  what…

A:

Q: The figure shows an outstretched arm (0.61 m in length) that is parallel to the floor. The arm is…

A:

Q: A physics student is getting some physical education, specifically doing a pushup, so he’s supported…

A: Given: The mass of the student is 75 kg. The distance of the centre of mass from the shoulder is 39…

Q: 3. Auniform beam of length L and mass Mhas its lower end pivoted at P on the floor, making an angle…

A:

Q: A man holds a 167-N ball in his hand, with the forearm horizontal (see the figure). He can support…

A:

Q: At the local playground, a 21-kg child sits on the right end ofa horizontal teeter-totter, 1.8 m…

A:

Q: 40.0° K 2.0 m 30.0°

A:

Q: 72. Go Review Conceptual Exam- ple 7 before starting this prob- lem. A uniform plank of length o 5.0…

A:

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.