By balancing the total forces and the torque on the rod, we get:
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Now the torque about the hinge would be only due to the force in the string:
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\n"},"encodingFormat":"text/html","position":2,"text":""},"comment":{"@type":"Comment","text":"The balancing of force is necessary when you consider it to be in equilibrium, and the torque about a point is zero due to the force at that point itself."},"eduQuestionType":"Multiple choice","encodingFormat":"text/markdown","learningResourceType":"Practice problem","suggestedAnswer":[{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":0,"text":""},{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":1,"text":""},{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":3,"text":""}],"text":"
A uniform rod has a weight of and a length of . It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end). What is the magnitude of the torque exerted by the string about a horizontal axis which passes through the hinge and is perpendicular to the rod?
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\n"},"name":"Quiz on System of Particles and Rotational Motion","typicalAgeRange":"10-17","url":"https://www.embibe.com/questions/A-uniform-rod-has-a-weight-of-40%C2%A0N-and-a-length-of-1%C2%A0m.-It-is-hinged-to-a-wall-%28at-the-left-end%29%2C-and-held-in-a-horizontal-position-by-a-vertical-massless-string-%28at-the-right-end%29.-What-is-the-magnitude-of-the-torque-exerted-by-the-string-about-a-horizontal-axis-which-passes-through-the-hinge-and-is-perpendicular-to-the-rod%3F%0A%0A/EM8536960"}
Embibe Experts Solutions for Exercise 5: EXERCISE 6.5
Author:Embibe Experts
Embibe Experts Physics Solutions for Exercise - Embibe Experts Solutions for Exercise 5: EXERCISE 6.5
Attempt the practice questions from Exercise 5: EXERCISE 6.5 with hints and solutions to strengthen your understanding. Gamma Question Bank for Engineering Physics solutions are prepared by Experienced Embibe Experts.
Questions from Embibe Experts Solutions for Exercise 5: EXERCISE 6.5 with Hints & Solutions
A uniform rod has a weight of and a length of . It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end). What is the magnitude of the torque exerted by the string about a horizontal axis which passes through the hinge and is perpendicular to the rod?
A uniform rod has a weight of and a length of . It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end). What is the tension in the string?
A uniform rod has a weight of and a length of . It is hinged to a wall (at the left end), and held in a horizontal position by a vertical massless string (at the right end). What is the magnitude of the hinge force?
A thin cylindrical rod of uniform mass density, rests against a smooth wall as shown in figure. Find the coefficient of friction between ground and rod (if the minimum angle that the rod can make with the horizontal is )