a uniform rod of mass 2kg and length 1m is lying on a horizontal surface if the work done - Physics - Work Energy And Power

Question

a uniform rod of mass 2kg and length 1m is lying on a horizontal
surface if the work done in raising one end of the rod through an
angle 450 is 'W', the work done in raising it further
through 450 is?

Pratyay Ghosh · Accepted Answer

When the the rod is raised through an angle 45 degrees, the CoM of
the rod moves up by =0 5×sin450=0 52=122 m
Work done, W=2×10×122=52 J
The CoM will raise again by 12-122 m
Work done in this case,
W1=2×10×12-122=10×1-12=2-152 JW1=2-1W

a uniform rod of mass 2kg and length 1m is lying on a horizontal surface. if the work done in raising one end of the rod through an angle 450 is 'W', the work done in raising it further through 450 is?

a uniform rod of mass 2kg and length 1m is lying on a horizontal surface. if the work done in raising one end of the rod through an angle 45⁰ is 'W', the work done in raising it further through 45⁰ is?