8. Law of the Lever A plank 30 ft long rests on top of a flat- roofed building, with 5 ft of the plank projecting over the edge, as shown in the figure. A worker weighing 240 lb sits on one end of the plank. What is the largest weight that can be hung on the projecting end of the plank if it is to remain in balance? (Use the law of the lever stated in Exercise 77.) -5 ft-|

Q: Q3. In the figure below, one end of the uniform beam of mass 50 kg is hinged to a wall. The other…

A: Given:-               Beam mass = m = 50 kg                   Box mass = m' = 10 kg…

Q: 24) The a 10 kg block (a cube of length L) is supported on each end by a narrow bear. Someone pushes…

A:

Q: 7. The horizontal stick of length, L, shown in the figure is uniform and weighs 200 N. Calculate the…

A: Force brings about motion and changes in it. Free body diagram gives whole idea of the forces…

Q: 53° 5 m A uniform 8ON beam that is 5 m long is attached to a wall by a cable as shown in the figure.…

A:

Q: A 560-N woman stands on top of a very tall ladder so she is at a height of 2*REarth. What is her…

A: Weight at surface of earth       Wo = 560 N Height (h) = 2Rearth

Q: A fisherman pulls in a huge fish and uses a balance with a single weight of mass 1.67 kg to balance,…

A:

Q: Physics 12 Equilibrium Problems 1. A 79kg person is standing at the edge of a 22kg diving board.…

A: Step 1:Step 2:

Q: A plank has a length of 3.50 meters and is supported by a pivot point at the center. Justin with a…

A:

Q: The figure below shows a uniform, horizontal beam (length-10 m, mass-25 kg) that is pivoted at the…

A:

Q: Two children of mass 15 kg and 40 kg sit balanced on a seesaw with the pivot point located at the…

A: Given data: The mass of bigger child, m1=40 kg. The mass of smaller child, m2=15 kg. The distance…

Q: 10. One end of a 1.5 kg uniform stick that is 2.0 m long is placed against a vertical wall as shown.…

A: The objective of the question is to find the maximum value of the angle theta for the stick to…

Q: A vendor hangs an 8.0 kg sign in front of his shop with a cable held away from the building by a…

A: It is given that,

Q: Determine the magnitude P of the vertical force required to lift the wheelbarrow free of the ground…

A: We have to find the vertical force required to lift the wheelbarrow free of the ground at point B

Q: 1) In Olympic 2016, Maddison Keeney with the mass of 50 kg was standing at the edge of a long and…

A: force that the fulcrum exerts on the board = 3250 Nforce that the bolt exerts on the board =…

Q: Question 17 A beam 6 m in length is placed on a support so that it pivots at the point of the…

A:

Q: A 56 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end, as…

A: Given,

Q: When just a single force is present, can an item be in equilibrium? Explain.

A: Equilibrium system.

Q: A seesaw with a length of 5 m and a mass of 40 kg is pivoted at its center. A 20kg child sits on one…

A:

Q: A horizontal 8.0 m long 57 N uniform bar at one end is attached to a wall by a frictionless hinge…

A:

Q: Determine the magnitude P of the vertical force required to lift the wheelbarrow free of the ground…

A: Combined weight of the wheelbarrow and the load in it, W=274 lb (it is acting along the center of…

Q: A horizontal, 16.5-m plank weighs 304 N. It rests on two supports that are placed 2.50 m from each…

A: Given L=plank length=16.5m Weight of plank=304 N Distance from and to supports=2.5m Weight of…

Q: A 20.0-m-long uniform beam weighing 700 N rests on walls A and B, as shown in the figure below. с…

A:

Q: 4. A uniform ladder of mass (m = 12.5 kg) and length (L) leans against a frictionless wall, see…

A: Given that:- Mass of ladder=12.5kg

Q: [BONUS PROBLEM] A 145 kg beam is 8 m long and is supported initially by its end rollers on the…

A:

Q: A uniform beam of length L = 7.65 m and weight 545 N is carried by two men, Sam and Joe, as shown in…

A:

Q: 2. A boy weighting 600 N sits 2.5 m from the center of the see-saw. If his friend weighs 750 N, how…

A:

Q: Modelled after problem 5 in the Problems_Torque_Statics: A 12.83-m-high and 19.48-m-long wall under…

A:

Q: During the downward portion of a biceps curl the velocity of the dumbbell is held constant. If the…

A:

Q: 15. A seesaw is 10 m long and balanced in the middle. A boy weighing 48 kg is seated Im from one end…

A: Given  Length of seesaw L=10m Mass of boy m1=48 kg Distance from pivot point d=5-1 =4m Mass of…

Q: 10. One end of a 1.5 kg uniform stick that is 2.0 m long is placed against a vertical wall as shown.…

A: The objective of the question is to find the maximum value of the angle theta for the stick to…

Q: A 10 m uniform beam of weight 100 N is supported by two ropes at the ends as shown in Figure 3. If a…

A:

Q: A lightweight diving board is supported by two pillars. One is at the end of the board and the other…

A: Mass of person = 75 kg Force exerted by the person = m.g Force = 75 * 9.8 = 735 N Fulcrum point is…

Q: Ginger was caring for her litter of puppies when the four curious pups spotted a cat for the first…

A: Given that, No. Of puppies (n)= 4 Force applied by each puppy (F)= 8 N We know that, To keep the…

Q: 2. A person could not balance her entire weight on the pointed end of a single nail, because it…

A: In case of the person lying on a bed of nails, consisting of a large number of nails, person's…

Q: 1. Where must a 1 kN object be hung on a uniform, horizontal, rigid 200 N pole so that a girl…

A:

Q: When just a single force is present, can an item be in equilibrium? Explain.

A: When the net force on an item is zero, the item is said to be in equilibrium.

Q: Two children of mass 21 kg and 26 kg sit balanced on a seesaw with the pivot point located at the…

A: Let r be defined as the distance from the pivot point of the small child. Then the distance of the…

Q: against the wall, where it is held by friction as shown in the figure below. The coefficient of…

A: