If you put a heavy load in a wheelbarrow, the force you apply to the handles is much less than the weight of the load and the wheelbarrow. To lift with the least force, you put the load toward the front of the wheelbarrow, near to the front wheel. Explain how this reduces the force to support the handles.

Q: A sandwich board advertising sign is constructed as shown in Figure 5.39. Its mass is 6.90 kg. (a)…

A: Consider the free-body diagram of the half part of the board, because of its symmetry from the…

Q: A uniform, 100-N pipe is used as a lever as shown in the figure. Where must the fulcrum (the support…

A: The reaction force is the result of action force and is directly opposite to action force. Weight of…

Q: What is the torque produced when a force of 15N is applied to open the door that is 2.5 meters wide?…

A: Given, Force = 15 N Width of door = 2.5 m Application of force = middle of the door  So ,r = 1.25 m

Q: A uniform plank is supported by two equal 120-N forces at X and Y, as shown. The support at X is…

A: AnswerGiven that, A uniform plank is supported by two equal 120N  forces at…

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,…

A:

Q: he diagram below shows a beam of length 20.0 m and mass 40.0 kg resting on two supports placed at…

A:

Q: Suspend the meter stick on a pin through the hole at the 25 cm mark. Add weights on the string at…

A: Let’s first determine the average mass of the meter stick (ms) from the given data.

Q: A car weighs 1800 kg. The distance between its front and back axles is 1.8 m. Its centre of gravity…

A: Given,Centre of gravity from the front axle isCalculate the distance of center of gravity from the…

Q: Three children are trying to balance on a seesaw, which includes a fulcrum rock acting as a pivot at…

A: The weight of Child A,

Q: If the beam in the figure below is in equilibrium (A is a pin and B is a roller), determine the…

A: A. A reaction force is the force acting on a body as a result of the force exerted by the body. In…

Q: The horizontal beam in the figure below (Figure 1) weighs 190 NN and its center of gravity is at its…

A: weight of beam = Wb = 190 N weight of load = WL= 300N Length of beam = L = 4m

Q: The topic is torque A uniform horizontal beam is attached to a wall by a pin connection that allows…

A: Let the Tension be T Weight of beam (Wb) = Mg Wb = 35.7×10 =357 N Weight of the person (Wp) = mg=600…

Q: A weightlifter is holding a 50.0-lb weight (equivalent to 222.4 N) with his forearm, as shown in…

A: Note: figure is not attached to the question      so, forearm length was assumed to be…

Q: If you are using a long-handled wrench to loosen a nut from a bolt by rotating the nut in a…

A: A long handled wrench is used to loosen a nut by rotating it counterclockwise. The long handled…

Q: A person working at a drafting board may hold her head as shown in Figure shown, requiring muscle…

A: Let Fm=force by upper vertebrae W=weight Therefore the force in z direction will be,

Q: Calculate the tension in the cable supporting the beam shown in the figure. If a plant weighing 100…

A:

Q: The leg in the image below is in a cast (obviously). The cast and leg together have a mass of 18 kg…

A:

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

A: To get the value of x we apply rotational equilibrium about the point O And the only forces acting…

Q: hinge

A: The given data are: m=2.13 kgb=1 mF=162.8 Nθ=61°r=0.481 m

Q: Assume a person bends forward to lift a load “with his back” as shown. The spine pivots mainly at…

A:

Q: Please show me how to draw the torque diagram as well.

A:

Q: Athletes sometimes do an exercise called “curling weights”. This exercise consists of holding the…

A: The weight pulled is equivalent to the gravitational force on the object. The given weight in the…

Q: ah object to remain static, what two conditions must be true? A) Sum of integers = 0 %3D B) All…

A: Let an object be at static state, no linear or angular motion. It will not get any linear motion if…

Q: A 70 kg man walks out on a 10 kg beam that rests on, but is not attached to, two supports.  When the…

A: At the equilibrium the sum of the forces acts on the beam when it just starts to tip is zero. The…

Q: In the figure, one end of a unitorm beam of weight 280N is hinged to a wal the other end is…

A:

Q: ner False: the system shown in the diagram below is in static equilibrium. Assume the mass of the…

A: Answer: TRUE

Q: A metal disc is acted on by a number of forces. The forces areal in the plane of the disc and the…

A:

Q: In the figure, a 74 kg man walks out on a 20 kg beam that rests on, but is not attached to, two…

A:

Q: Ignore the weight of the board. (b) Take into account the board’s mass of 28-Kg. Assume the board’s…

A: Part-1 52 kg *9.8 N/kg = 509.6 N or 510 N then T(B)↑ = 510(4.0) = 2040 F(b) (1.0) = 2040 F(b) = 2040…

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

A:

Q: A force of 6.8 N is applied to a door at an angle of 50.0o and a distance of 0.75 m from the hinge.…

A: Force=6.8N r=0.75 Theta=50 degree

Q: meter stick has a mass of 0.30 kg and balances at its center. When a small chain is suspended from…

A:

Q: In the figure below a crowbar is used to lift a weight. If a down ward force of 246 N is applied to…

A:

Q: The horizontal beam in the figure weighs 150 N, and its center of gravity is at its center. Find the…

A: Given: Weight of beam, wb = 150 N Length of beam, l = 4 m Weight of object, wo = 300 N Let 'T' be…

Q: Estimate the force that the back muscle exerts on the backbone while lifting a 40 Ib package…

A:

Q: The uniform boom shown below weighs 644 N, and the object hanging from right end weighs 416 N. The…

A:

Q: In the figure, the center of gravity (CG) of the pole held by the pole vaulter is 1.8 m from the…

A:

Q: Two equal forces are applied to a door at the doorknob.  The first force is applied perpendicular to…

A:

Q: When opening a door, you push on it perpendicularly with a force of 48 N at a distance of 1.2m from…

A:

Q: The foot of a ladder rests against a wall and its top is held by a tie rope, as shown. The ladder…

A: Given-

Q: Consider an unsuccessful attempt to take off a tire using a wrench to loosen the bolts. Assume the…

A:

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: A plank which weighs 2.00 x 10- N with a length of 8.00 m is connected to a wall as seen in the…

A: Given:- The weight of the plank = 2.0 x 102 N  The length of the plank L= 8 m  The one end of the…

Q: Two children are balanced on opposite sides of a seesaw. Ifone child leans inward toward the pivot…

A: Let m and M be the masses of children and r and R be their respective distances from the pivot…

Q: As a swimmer pulls his arm through the water, various muscles exert forces on the upper arm. The…

A: Given data D=33cm = 0.33m d=7.30cm = 0.073m Fhand = 119 N

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.