Questions
An arrangement of rods each of mass m and length l are welded (where ever required) to form a shape as shown. The moment of inertia about an axis passing through point C and perpendicular to the plane of figure is:
detailed solution
Correct option is D
I=4ml23+2ml212+m3l22=3ml2∵Moment of inertia of the rod about its end =ml23Moment of inertia of a thin rod about its centre and perpendicular to its length=ml212Moment of inertia of rods placed horizontally is given by =ml212+mx2 where x=l32Talk to our academic expert!
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The radius of gyration of a rod of length L and mass M about an axis perpendicular to its length and passing through a point at a distance L/3 from one of its ends is
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