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pallavi pradeep bhardwaj Grade: 12
        

A metre scale is standing vertically on the earth surface on one of its end It now falls on earth without slipping Find the velocity with which the free end of the scale strikes the earth

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear pallavi




7023-101_7662_untitled 1.JPG


let the mass of rod is M and moment of inertia I = ML2/3


decrese in potential energy = increse in rorational energy


  MgL/2                            =  1/2Iw2


  MgL/2   = 1/2 ML2/3 w2


w2  = 3g/L


w=√3g/L


velocity of end V=Lw


                        =√3gL


                        =√3*10*1


                        =5.47 m/sec


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7 years ago
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