Beverage engineering. The pull tab was a major advance in the engineering design of beverage containers. The tab pivots on a central bolt in the can’s top.When you pull upward on one end of the tab, the other end presses downward on a portion of the can’s top that has been scored. If you pull upward with a 10 N force, what force magnitude acts on the scored section? (You will need to examine a can with a pull tab.)

Q: A uniform drawbridge must be held at a 41.0° angle above the horizontal to allow ships to pass…

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Q: Bobina and Bob are on the seesaw down at the elementary school playground and decide to see if they…

A: Weight of Bobina , W1 = 400 N Weight of Bob, W2 = 450 N Distance of Bobina from the fulcrum , R1 = 2…

Q: A tower crane (Figure 1) must always be carefully balanced so that there is no net torque tending to…

A: Solution: Given that m=2600kgM=8200kgL=7.7 ml=3.4 m

Q: Priya and her friend Fei opened up a tea shop that serves tea from around the world. For their new…

A: At the hinge point, two forces act. One is in the upward direction and the other is in the rightward…

Q: A young work crew is trying to quickly finish some touch-up painting to complete a job. Rather than…

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Q: please help !

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Q: A uniform 5.0 m long 25 kg plank is to hold two people washing windows on a downtown skyscraper. The…

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Q: A uniform spool is suspended from a vertical wall by a string attached to the spool’s thin axle. The…

A: Given data The Tension in the string is given as T = 2.6 N.   The free-body diagram is drawn as,

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: Two children push on opposite sides of a door during play. Both push horizontally and perpendicular…

A: The first child applies a force F1 = 17.1 N at a distance r1 = 0.551 m from the hinges, on one side…

Q: A 79 kg adult sits at one end of a 9.0m long board. His 21 kg child sits on the other end. Part A…

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Q: A 1000 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.26. The…

A: Given that,Weight hangs from its top is,W= 2100NUniform boom is supported by a cable perpendicular…

Q: Problem 3: You have been hired to design a family-friendly see-saw. Your design will feature a…

A: Given: The mass of the uniform board is M = 11 kg The length of the uniform board is L = 13 m The…

Q: Figure A B 3.0 m 1 of 1 > Calculate the torque (magnitude and direction) about the front support…

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Q: A 9 800-N shark is supported by a rope attached to a 4.20-m rod that can pivot at the base. 20.0°…

A: The problem is illustrated as:  Since we do not have the length of the rod and cable, we will…

Q: A child with a mass of 24.3 kg sits on a see-saw, 2.75 m from its center (on its fulcrum). How far…

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Q: Emma and Noah are playing on a seesaw. Noah, mass 22 kg, is seated 1.6 m away from the pivot point.…

A: In order for the seesaw to be balanced, the torque must be equal on each side of the pivot point.…

Q: A 1.90-m-long barbell has a 21.0 kg weight on its left end and a 32.0 kg weight on its right end. If…

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Q: Consider a see-saw with a total length of 8 m. A child with a mass of 31 kg sits on the very end of…

A: The free-body diagram of the see-saw is shown below.

Q: A person carries a plank of wood 2.00 m long with one hand pushing it down at one end with a force…

A: Solution:                                             From our free-body diagram we conclude that…

Q: A 5.00 m–long uniform diving board that weighs 250.0 N is supported by two pillars. One pillar is at…

A: The free-body diagram of the board is shown below.

Q: A traffic light hangs from a 7.2-m long beam (AB) that is attached to a pole by a hinge (A), as…

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Q: A 55 kg uniform board 2.44 m long is supported by a pivot 78 cm from the left end and by a scale at…

A: Part(a) Where should the 44 kg child sit if the scale is to read 100 N. Part(b) Where should the 44…

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 rests on a fulcrum, 1.4 meters from one end. A weight of 495 kg is suspended from this end…

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Q: A5N force is applied to a doorknob 0.72 m from the hinge as illustrated in the figure below. What is…

A: ACCORDING TO QUETION- A FORCE IS APPLING ON A DOORKNOB WHICH IS 57 DEGREE FROM ITS HINGE GIVEN THAT…

Q: A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm…

A: Given, d = 0.255 mmass of the rock, m 405 kgmaximum force applied on the other end of the rod, F=…

Q: Problem 1: A 5.7-m ladder rests against a wall as shown. The ladder has a mass of 26.3 kg. A 58.3-kg…

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Q: A person of mass m is standing on his tiptoes on both feet. The situation is pictured on the right.…

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Q: When a gymnast weighing 740 N executes the iron cross as in figure (a), the primary muscles involved…

A: Let the total force on arm is given  by Fm. Let the half weight of the gymnast is given by whalf.…

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: The wheels,axle, and handles of a wheelbarrow weigh W=56N. The load chamber and it’s contents weigh…

A: Given Data: Weight (W) = 56 N.Weight of the load chamber WL = 635 N. To Determine: The magnitude of…

Q: An 8.31-m, 267-N uniform ladder rests against a smooth (frictionless) wall. The coefficient of…

A: Given data: Height of the ladder is, L=8.31 m Wight of the ladder is, Wl=267 N The coefficient of…

Q: A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm…

A: Given: Distance d=0.266m Mass of rock is m=325kg Applied force F=663N Length of rod is L.

Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is…

A: Given: Length of meterstick, L=100 cm Center of gravity(CG) of meterstick is at 50cm A 23.0 N block…

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

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Q: 17 kg uniform store sign is held from a uniform horizontal beam as shown. There is a cable attached…

A: A uniform store sign is held from a uniform horizontal beam. Mass of store sign M=17 kg The sign is…

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.