Questions
Particles of masses m, 2m, 3m, … nm grams are placed on the same line at distance l, 2l, 3l,…. nl cm from a fixed point. The distance of centre of mass of the particles from the fixed point in centimeters is:
detailed solution
Correct option is A
xcm = ml+2m2l+3m3l+....nmnlm+2m+...+nm = l[1+4+9+....+n2]1+2+....+n = l[n(n+1)(2n+1)/6]n(n+1)2 = (2n+1)l3Talk to our academic expert!
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A T-shaped object with dimensions as shown in the figure, is lying on a smooth floor. A force F is applied at the point P parallel to AB, such that the object has only the translational motion without rotation. Find the location of P with respect to C.
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