An old carpenter’s trick to keep nails from bending when they are pounded into hard materials is to grip the center of the nail firmly with pliers. Why does this help?

Q: Problem 7:  Two children of mass 17 kg and 32 kg sit balanced on a seesaw with the pivot point…

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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: In exercise physiology studies, it is sometimes important to determine the location of a person's…

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Q: Problem 4: You have been hired to design a family-friendly see-saw. Your design will feature a…

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

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Q: Q19

A: Given mass of monkey = m = 11.5 kg weight of ladder = 1.07 x 102 N = 107 N (act at the center of the…

Q: For the purposes of this problem, we’ll assume a simple model of the operation of your foot and…

A: Consider the FBD of the given arrangement as shown below:     Here, θ denotes the angle made by the…

Q: 나. ? 3 m 어야

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Q: view Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight…

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Q: A bar weighs 8 N and is 5 m in length. What is the weight needed (M) to balance the bar? Don't…

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Q: Many vending machines have a label on them warning of the dangers of trying to tip the machine…

A: using the balancing of the torque d1F1 = d2F21960*0.25 = 1.5*F2490= 1.5 F2F2 = 326.67 N

Q: John is performing an isometric contraction of the quadriceps to hold a 500 N weight at an angle of…

A: Given, weight W=500angle θ=450l=42.5 cmd=10mm

Q: What torque is produced by the pole-vaulter's left arm through his centre of gravity What torque is…

A: Given that:FL=1000 NFR=2000 NdL=0.50 mdR=1.5 mW=700 N

Q: Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight…

A: x=0.79mExplanation:Step 1:Step 2:*(the torque due to plank's weight is counter-clockwise while the…

Q: Scientists have studied how snakes grip and climb ropes. In one study, they found that an important…

A: Let us look at the upper node. The tension everywhere in the rope supporting mass M be T3=mg. This…

Q: A 40kg dog and a 30kg cat are sitting on either end of a long board balanced precariously on a pivot…

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Q: The 20-mm-diameter A-36 steel shaft is subjected to the torques shown. 80 Nm 20 Nm 30 Nm 800 mm 600…

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Q: The fishing pole in Figure P8.3 makes an angle of 20.0° with the horizontal. What is the magnitude…

A: Given:  Force, F = 100 NRadius, r = 2 mFind: The torque exerted by the fish about an axis…

Q: Which of the following is the condition for the rotational equilibrium? The sum of the clockwise…

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Q: A professor's office door is 0.91 m wide, 2.0 m high, and 4.0 cm thick; has a mass of 25 kg; and…

A: Given:The dimension of the door are 0.91m wide 2.0 m high and 4.0 cm thick.The door has a mass of 25…

Q: During pregnancy, women often develop back pains from leaning backward while walking. Why do they…

A: To determine during pregnancy women often develop back pains from the leaning backwards

Q: (a) Choose the following values. None of them can be 0. Numbers can be picked by expert  The length…

A: Note: As per the guidelines, we can only answer three subparts of a question. Sorry for the…

Q: Six forces, each of magnitude F or 2F are applied to a door. Rank the torques exhibited by each…

A: Introduction about Force and Torque: 1) In simple terms, Torque is imagine as rotational equivalent…

Q: Q#1(a): Two persons are playing on See-Saw as shown in figure below. Calculate the distance at which…

A: Given The weight of a person A is WA=114 N. The weight of a person B is WB=50 N. The distance…

Q: Given that a = 4.5m, b = 1.5m, c = 5.5m, d = 1.3m, e = 10.0m and 0 = 34°. The force F = 103N is…

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Q: Problem 4: You have been hired to design a family-friendly see-saw. Your design will feature a…

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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: A flagpole has a uniform mass density and total mass of M and length L. It is hinged at the ground…

A: Answer

Q: One way to get the rim of a cart wheel to fit tightly on the wheel is to make the rim a bit smaller…

A: The radius of the iron rim is slightly smaller than the radius of the cartwheel made up of wood.

Q: Problem 4: You have been hired to design a family-friendly see-saw. Your design will feature a…

A: Given,M = 9 kgL = 2.1 kgx = 18 cm = 0.18 mm1= 23 kgm2 = 71 kg

Q: You can find the center of gravity of a long ruler by resting it horizontally on your two index…

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Q: Scientists have studied how snakes grip and climb ropes. In one study, they found that an important…

A: a) Analyze the following diagram. Applying Newton’s second law on the rope in the vertical…

Q: n exercise physiólogy studies, it is sometimes important to determine the location of a person's…

A: given: readings fg1=395N fg2 = 340N distance between two scales =1.65m

Q: When you bend over, a series of large muscles, the erector spinae, pull on your spine to hold you…

A: Given data γ=300 θ=120 wh=160 N wT=320 N

Q: Wolverine has an arm that is 1[m] long and claws that are 0.5[m] long. He's trying to knock over a…

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Q: A flagpole has a uniform mass density and total mass of M and length L. It is hinged at the ground…

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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: When you carry shopping bags, rather than grasp the handles with your hand as in Q8.14a, you might…

A: For a given set of grocery bags the torque they produce about a person's elbow will be larger the…

Q: tensile test

A: Tensile test is used to see stress upon material.

Q: A door with a width w = 81.0 cm is pushed open with a force a b d F of magnitude 55.0 N. 55° Hinge…

A: Given Data Width of the door is w=81.0 cm=81.0 cm×1 m100 cm=0.81 m Magnitude of the force is F=55.0…

Q: Bart ( whose mass is 31.1 kg) and Milhouse (whose mass is 20.4 kg) sit balanced on a teeter -totter…

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Q: Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight…

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Q: The 3.8 m long board shown in the image has a mass of 6.4 kg. The left support is 0.40 m from left…

A: Given: Mass of board = 6.4 kg Length of board = 3.8 m Length between right support and right edge =…

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.