Essential University Physics (3rd Edition)
3rd Edition
ISBN: 9780134202709
Author: Richard Wolfson
Publisher: PEARSON
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Chapter 12.2, Problem 12.2GI
To determine
To identify: the center of gravity from the given three lettered points on dancer.
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Chapter 12 Solutions
Essential University Physics (3rd Edition)
Ch. 12.1 - The figure shows three pairs of forces acting on...Ch. 12.2 - Prob. 12.2GICh. 12.3 - The figure shows a person in static equilibrium...Ch. 12.4 - Prob. 12.4GICh. 12 - Give an example of an object on which the net...Ch. 12 - Give an example of an object on which the net...Ch. 12 - Prob. 3FTDCh. 12 - Pregnant women often assume a posture with their...Ch. 12 - When you carry a bucket of water with one hand,...Ch. 12 - Is a ladder more likely to slip when you stand...
Ch. 12 - How does a heavy keel help keep a boat from...Ch. 12 - Does choosing a pivot point in an equilibrium...Ch. 12 - If you take the pivot point at the application...Ch. 12 - A short dog and a tall person are standing on a...Ch. 12 - Prob. 11FTDCh. 12 - A body is subject to three forces; F1=1i+2jN,...Ch. 12 - To demonstrate that the choice of pivot point...Ch. 12 - In Fig. 12.11 the forces shown all have the same...Ch. 12 - Figure 12.12a shows a thin, uniform square plate...Ch. 12 - Repeat the preceding problem for the equilateral...Ch. 12 - A 23-m-long log of irregular cross section lies...Ch. 12 - A 60-kg uniform board 2.4 m long is supported by a...Ch. 12 - Where should the child in Fig. 12.14 sit if the...Ch. 12 - A 4.2-m-long beam is supported by a cable at its...Ch. 12 - Figure 12.15 shows how a scale with a capacity of...Ch. 12 - A portion of a roller-coaster track is described...Ch. 12 - Prob. 23ECh. 12 - Youre a highway safety engineer, and youre asked...Ch. 12 - Figure 12.17a shows an outstretched arm with mass...Ch. 12 - A uniform sphere of radius R is supported by a...Ch. 12 - You work for a garden equipment company, and youre...Ch. 12 - Figure 12.20 shows the fool and lower leg of a...Ch. 12 - A uniform 5.0-kg ladder is leaning against a...Ch. 12 - The boom in the crane of Fig. 12.21 is free to...Ch. 12 - A uniform board of length L and weight W is...Ch. 12 - Figure 12.23 shows a 1250-kg car that has slipped...Ch. 12 - Repeat Example 12.2, now assuming that the...Ch. 12 - You are headwaiter at a new restaurant, and your...Ch. 12 - Climbers attempting to cross a stream place a...Ch. 12 - A crane in a marble quarry is mounted on the...Ch. 12 - A rectangular block measures w w L, where L is...Ch. 12 - The potential energy as a function of position for...Ch. 12 - A rectangular block of mass m measures w w L,...Ch. 12 - A 160-kg highway sign of uniform density is 2.3 m...Ch. 12 - A 5.0-m-long ladder has mass 9.5 kg and is leaning...Ch. 12 - Prob. 42PCh. 12 - A uniform, solid cube of mass m and side s is in...Ch. 12 - An isosceles triangular block of mass m and height...Ch. 12 - Youre investigating ladder safety for the Consumer...Ch. 12 - A 2.0-m-long rod has density in kilograms per...Ch. 12 - What horizontal force applied at its highest point...Ch. 12 - A rectangular block twice as high as it is wide is...Ch. 12 - What condition on the coefficient of friction in...Ch. 12 - A uniform solid cone of height h and base diameter...Ch. 12 - Prove the statement in Section 12.1 that the...Ch. 12 - Three identical books of length L are stacked over...Ch. 12 - A uniform pole of mass M is at rest on an incline...Ch. 12 - For what angle does the situation in Problem 53...Ch. 12 - Figure 12.31 shows a popular system for mounting...Ch. 12 - The nuchal ligament is a thick, cordlike structure...Ch. 12 - A 4.2-kg plant hangs from the bracket shown in...Ch. 12 - The wheel in Fig. 12.34 has mass M and is weighted...Ch. 12 - An interstellar spacecraft from an advanced...Ch. 12 - Youre called to testify in a product liability...Ch. 12 - Youre designing a vacation cabin at a ski resort....Ch. 12 - Prob. 62PCh. 12 - Engineers designing a new semiconductor device...Ch. 12 - Youve been hired by your states environmental...Ch. 12 - Youve been hired by your states environmental...Ch. 12 - Youve been hired by your states environmental...Ch. 12 - Youve been hired by your states environmental...
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- The two ends of the barbell shown are made of the same material. Which of the points shown is at the barbell’s center of gravity?arrow_forwardA child with a mass of 23 kg sits at a distance of 4 m from the pivot point of a seesaw. Where should a 15 kg child sit to balance the seesaw?arrow_forwardWhich of the objects below is in static equilibrium?arrow_forward
- A 15kg child and a 25kg child sit at opposite ends of a 4.0m seesaw pivoted at its center. Where should a third child whose mass is 20kg sit in order to balance the seesaw?arrow_forwardA seesaw is 10 m long and balanced in the middle. A boy weighing 48 kg is seated 1m from one end and on the other side is another boy that weighs 56 kg. Where should the 56 kg boy sit to produce equilibrium?arrow_forwardA 50 N weight is located 20 cm from the fulcrum of a balance beam. At what distance from the fulcrum should a 20 N weight be placed to balance the system?arrow_forward
- If a walking stick with a mass of 300 g can be balanced by placing a mass M of 150 g at a distance L of 40 cm from the fulcrum, then the center of gravity of the stick is _______ cm away from the fulcrumarrow_forwardA lady weighing 450 N sits on one end of a seesaw that is 3 m long and is pivoted 1.3 m from the lady . if the seesaw is just balanced when a man sits at the opposite end, what will be its weight?arrow_forwardA meter stick is placed on a pivot at the 40cm mark. A mass of 0.25kg is placed on the 20cm mark to bring the system into static equilibrium. What is the mass of the meter stick?arrow_forward
- Two children of mass 16 kg and 37 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 5 m, at what distance from the pivot point is the small child sitting in order to maintain the balance?arrow_forwardA 20kg cat hangs from one end of a 6-meter board. If the fulcrum is located at the center of the board, where should a 40kg cat hang in order to balance the beamarrow_forwardConsider the image shown where a plank rests horizontally on a roof.Given the following parameters: M= 4.5kg L=9.8m, m=59kg and D=3.2m. Calculate the distance from the left end that a person would reach when the plank starts to tip.arrow_forward
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