A uniform plank 6 m long and 30 kg in mass rests horizontally on a scaffold. If 1.5 m of the plank protrudes from one end of the scaffold. How far can a 60 kg broad brush painter walk on the overhang before the plank tips over?

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: Bob and Steve are building a see-saw and want it to balance when they both sit on the ends, but Bob…

A: Given : Weight of Bob is twice as Steve  Find : Where would the fulcrum have to be positioned for…

Q: A uniform board supports two children weighing 500 N and 350 N. If the support is at the center of…

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Q: A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ…

A: Given that: To determine: a) Write an expression for the y-component Py of the force exerted by the…

Q: The boom in the figure is 2m long and weighs 100 N. If the 800N load is suspended 50cm from the end,…

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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…

A: The relation between areas of the two cylinder tops AA=2.5AB and the relation between the Young's…

Q: A uniform rod of length 100cm and mass 0.4 kg is placed on a fulcrum at a distance of 80cm from the…

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

Q: A 10-m long homogenous beam with a weight of 50N is divided into 10 equal parts (1 m each) as shown…

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Q: A uniform 35.0-kg beam of length l= 5.00m is supported by a vertical rope located d= 1.20m from its…

A: Mass of beam=35Kg length of beam,l=5m

Q: Suppose a 900-kg car is on the bridge in Figure shown with its center of mass halfway between the…

A: Here, mass of the bridge =2500kg Net torque is zero at the left hinge. Torque due to the weight of…

Q: Two students are on a seesaw (length = 4.0 m and mass = 32.1 kg).  Student 1 [mass = 34.6 kg) sits…

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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: How much work was done by the person against Gravity?

A: Initially the center of mass is at a height, The center of mass ends at a height of

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 large wood beam weighing 800 N is supported by two posts as shown. If an unthinking man weighing…

A: Given, large wood beam weighs 800 N supported by two rods Man weighing 700 N walks from A to right…

Q: The uniform seesaw shown below is balanced on a fulcrum located 3.0 m from the left end. The smaller…

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Q: A father and his daughter are playing a see-saw made of a plank of length 5.1 m and of weight 118 N…

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Q: What force must be applied at point P to keep the structure shown in equilibrium? The weight of the…

A: Here the body is in static equilibrium, thus the net forces acting on the body will be equal to…

Q: A person carries a plank of wood 2.0 m long with one hand pushing down on it at one end with a force…

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

Q: A uniform beam of length 1.0 m and mass 10 kg is attached to a wall by a cable, as shown. The beam…

A: Rotational Equilibrium: Here, the torque due to the weight of the beam about the pivot at the point…

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: 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 diver of weight 470 N stands at the end of a diving board of length L = 4.8 m and negligible mass…

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Q: Q9 The system in the figure is in equilibrium. A concrete block of mass 287 kg hangs from the end of…

A: GIVEN: mass of the concrete block M = 287kg mass of strut m= 33.6kg

Q: A clown of mass Mc= 100kg stands still at the far right end of a plank of uniform density, mass Mp=…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: A 6.00 m uniform beam of mass 17.0 kg is hinged to a vertical wall. The beam is kept in a stationary…

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Q: A uniform foot bridge 10 m. long weighs 1000 N .  What is the supporting force on  each end when a…

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Q: A uniform plank has mass M = 9 kg and length L = 4.0 m. A box of mass m = 2.2 kg rests on it at a…

A: Given data: The mass of the uniform plank, M=9 kg. The length of the plank, L=4.0 m. The mass of…

Q: A man is attempting to raise a 7.5 m long, 28 kg flagpole that has a hinge at the base by pulling on…

A: If a rigid body is in equilibrium, the vector sum of all force acting on the body is zero,

Q: when one boy is sitting 1.2 m from the center of a see-saw, another boy must sit on the other side…

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Q: 53° 5 m A uniform 80N beam that is 5 m long is attached to a wall by a cable as shown in the figure.…

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Q: A person on horseback is on a drawbridge which is at an angle e = 20.0° above the horizontal, as…

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Q: A bucket crane consists of a uniform boom of mass M = 201 kg and length L = 59.81 ft that pivots at…

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Q: A diver of weight 510 N stands at the end of a diving board of length L = 4.9 m and negligible mass…

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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…

A: Given: AA=2.1 ABEA=2.4 EB

Q: A person carries a plank of wood 1.9 m long with one hand pushing down on it at one end with a force…

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Q: A horse weights 5000 Newtons. The distance between the front and rear hooves is L1= 1.8 meters and…

A: The torque (τ) about the rotation axis is given by the product of the perpendicular force (F) that…

Q: You’re carrying a 3.6-m-long, 25 kg pole to a construction site when you decide to stop for a rest.…

A: L=3.6 mm=25 kgx=35 cm =0.35 m

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: One end of the meter scale is at x=0 cm and the other end is at x=100 cm. The equation for the…

Q: A uniform meter stick has a 45.0 g mass placed at the 20 cm mark. If a pivot is placed at the 42.5…

A: Given: The mass of the object is 45 g. The length of the stick is 100 cm.

Q: In the figure (Figure 1)a 6.00-m-long, uniform beam is hanging from a point 1.00m to the right of…

A: Solution: Given:   W1 = weight attached to right end of bar = 100.0 N  W2 = weight of bar = 141 N…

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: A 700 N bear is standing on a metal plank supported by the cable shown in the figure. At the end of…

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Q: A uniform 10.0 m ladder of weight WL=375 N leans against a frictionless wall. There is a force of…

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Q: A boy and a girl are balanced on a massless seesaw. The boy has a mass of 60 kg and the girl's mass…

A: A seesaw balances when the force and distance on both sides become equal,…

Q: You're carrying a 3.4-m-long, 24 kg pole to a construction site when you decide to stop for a rest.…

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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…

A: Since the brick is now horizontal and the cylinders were initially the same length l, then both have…

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.