Show that the balanced meterstick in Example 8.5 is in static rotational equilibrium about a horizontal axis through the 100-cm end of the stick.
Answer to relevant QuestionsTelephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line. (a) Is it possible to have the lines perfectly horizontal? Why or why not? ...A variation of Russell traction (Fig. 8.38) supports the lower leg in a cast. Suppose that the patient’s leg and cast have a combined mass of 15.0 kg and m1 is 4.50 kg. (a) What is the reaction force of the leg muscles to ...A mass is suspended by two cords as shown in Fig. 8.44. What are the tensions in the cords? For the system of masses shown in Fig. 8.46, find the moment of inertia about (a) The x-axis, (b) The y-axis, and (c) An axis through the origin and perpendicular to the page (z-axis). Neglect the masses of the connecting ...A uniform 2.0-kg cylinder of radius 0.15 m is suspended by two strings wrapped around it (Fig. 8.50). As the cylinder descends, the strings unwind from it. What is the acceleration of the center of mass of the cylinder? ...
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