A 32.0 kg child sits on one end of a long uniform beam having a mass of 18.0 kg, and a 40.0 kg child sits on the other end. The beam balances when a fulcrum is placed below the beam a distance 1.20 m from the 32.0 kg child. How long is the beam? A. 1.93 m B. 2.20 m C. 2.07 m D. 1.97 m E. 2.12 m

Q: A 30.0 kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0 kg child…

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Q: A meter stick with a mass of 100 g balances horizontally when a pivot is placed at the middle (on…

A: The Centre of mass of meter stick and unknown mass is at 60cm

Q: 3. (15 points) A uniform, 255-N rod that is 2 m long carries a 225-N weight at its right end and an…

A: For rotational equilibrium  Clockwise torque =anticlock wise torque

Q: A beam is plvoted at its center. A 2.0 N weight Is attached to one end of the beam. An empty pan…

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Q: A uniform, 255-N rod that is 2.00 m long carries a 225-N weight at its right end and an unknown…

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Q: A uniform, 255 N rod that is 1.90 mm long carries a 225 N weight at its right end and an unknown…

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Q: L.

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Q: 3. A uniform solid cylinder, sphere, and hoop roll without slipping from rest at the top ofan…

A: The acceleration in the rolling motion is  a = g sinθ1+kr2 where, k is the radius of gyration and r…

Q: Two muscles create tension simultaneously on opposite sides of a joint. Muscle X, attaching 4 cm…

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Q: A little league player balances a bat 65.0 cm from one end. She then hangs her 0.540-kg batting…

A: CM of bat is at 65cm  When helmet of 0.54 kg hung then balance shifted to 24.5cm

Q: A 5.60m long, 500 kg steel uniform beam extends horizontally from the point where it has been bolted…

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Q: A uniform, 255-N rod that is 2.00m long carries a 225-N weight at its right end and an unknown…

A: Given:- A uniform, 255-N rod that is 2.00m long  The rod carries a 225-N weight at its right end and…

Q: When climbing into your childhood tree house you realize weight of mass m = 3.0 kg in the middle of…

A: We know that the torque is given as  τ= Iα where I is the moment of inertia  α is the angular…

Q: A seesaw in a children’s playground is 4.00 m long pivoted at its center. Suppose a 25-kg child sits…

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Q: Two people carry a heavy electric motor by placing it on a light board 2.00 m in length. One person…

A: The figure below depicts the given situation.

Q: A lever is used to lift a boulder. The fulcrum is placed 1.95 m away from the end at which you exert…

A: torque = 500 N.m  Angle = 80 degree d = 1.95 m using the formula for torque,torque = d×F ×Sinθ500 =…

Q: The two children shown in Figure are balanced on a seesaw of negligible mass. The first child has a…

A: Given: m1 = 26 kg  r1 = 1.6 m m2 = 32 kg

Q: <Homework9 Problem 11.51 - Enhanced - with Feedback A uniform, 255 N rod that is 2.00 m long carries…

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Q: a force acts on an A-truss as shown. Determine the value of the individual torques and the total…

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Q: A door has a width of 1 m. The hinge attaches the door on the left. This time, Andrea pushes on the…

A: Given, Width, d= 1m, Force, F= 30 N, and angle, θ= 900.

Q: Problem 2: You have been hired to design a family-friendly see-saw. Your design will feature a…

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Q: A 208N force is applied to a 0.93m long uniform rod (shown in the figure) at the end opposite the…

A: Consider the following figure.

Q: A meter stick has a mass of 0.18 kg and balances at its center. When a small chain is suspended from…

A: Consider the following figure.   Let O be the center of the meter stick, B be the point of…

Q: A uniform meter stick has a 45.0 g mass placed at the 20 cm mark as shown in the figure. If a pivot…

A: Let the mass of meter stick is m. The mass of dead weight is 45 g.

Q: 2. A string is tied to a doorknob 0.79 m from the hinge as shown in the figure. At the instant…

A: Distance of string attached from hinge: l = 0.79 m Force applied: F = 5.0 N

Q: 14. A lady weighing 450 N sits on one end of a seesaw that is 3 m long and is pivoted 1.3 m from the…

A: Given Weight of lady W1=450 N Length of seesaw L=3m Distance of lady from pivot d=1.3m

Q: Review | Constants A uniform, 255 N rod that is 1.80 m long carries a 225 N weight at its right end…

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Q: A pair of forces with equal magnitudes, opposite directions, and different lines of action is called…

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Q: A uniform meter stick is supported at the 50 cm mark. A 25 N weight is placed at the 10 cm mark.…

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Q: A 2.00-m-long, 500 kg steel uniform beam extends horizontally from the point where it has been…

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Q: The 50-N force P is applied perpendicular to the portion BC of the bent bar. Determine the moment of…

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Q: Suppose we have a 3 N weight that we want to balance against a 5 weight and a beam. which is…

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Q: A 40.0 lb child sits at the end of a 10.0 ft uniform seesaw which pivots at its center. Where must a…

A: The net force acting on an object is equal to mass times the acceleration of the object. If the net…

Q: 3. A uniform solid cylinder, sphere, and hoop roll without slipping from rest at the top of an…

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Q: Tom and Fred are carrying a uniform 2.0 m board (assume mass-less). Tom is supporting the board at…

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Q: A 25N force is applied to a bar that can pivot around its end. The force is r=0.75 m away from the…

A: Write the given values with suitable variables. F=25 Nr=0.75 m Here, F denotes the applied force and…

Q: Ryan is trying to open a stuck door. He pushes it at a point 0.75 m from the hinges with a 240 N…

A: Force is perpendicular to the radial line is, F⊥=Fcos20°F⊥=226N

Q: A 25N force is applied to a bar that can pivot around its end. The force is r=0.75 m away from the…

A: The force is resolved into two components The torque is given as τ=r(Fsinθ)

Q: A uniform, 255 N rod that is 2.10 m long carries a 225 N weight at its right end and an unknown…

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Q: The two objects shown are balanced on the pivot. What is distance d?

A: Analyze the FBD of the given system.

Q: A 81 cm wide door is pushed open with a  91N force applied to the end opposite the hinges. For each…

A: The applied force is, F=91 N The distance of the force from the hinges is, d=81 cm=0.81 m

Q: The 28-N force P is applied perpendicular to the portion BC of the bent bar. Determine the moment of…

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Q: A rectangular bar is hinged at point O.  The bar is 3.00 m long and 2.00 m wide.   Find the torque…

A: It is known that, F1=1N Length of bar, l=3 m Width of bar, w=2 m

Q: A 75 N seesaw supports two people who weigh 500N and 550N.respectively. the Fulcrum Is under the…

A: Given data: Weight of see-saw is, Ws=75 N. Weight of person 1 is, W1=500 N. Weight of person 2 is,…

Q: A 55.0 kg child sits 1.80 m to the left of center on a seesaw of length, L- 7.00 m, and mass 16.0…

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Q: When opening a door, you push on it perpendicularly with a force of 52.5 N at a distance of 0.825m…

A: Magnitude of the force,  Distance from the hinges,

Q: Bob and Anna sit on opposite ends of a uniform see-saw which is 12.0 m in length. The see-saw is…

A: Length of see saw (L) = 12 m distance of fulcrum from bob = 4 m Mass of bob = 85 kg mass of see saw…

Q: Bob and Anna sit on opposite ends of a uniform see-saw which is 12.0 m in length. The see-saw is…

A: Length of see saw = 12 m Mass of bob = 85 kg Mass of see saw = 100 kg Mass of Anna = M Distance of…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.