Uniform circular disc has a radius of 20 CM a circular disc of radius 10 cm is cut concentrically from the original disc the shift in centre
Answer (1)
24th May, 2019
hello saiprasad,
i will give u general solution so u can do any question of these type using the solution(this will be helpful in you jee as well)
Let the mass of the disc = M
Therefore, the mass of the removed part of disc, m = (M/R^2)*(R/2)^2 = M/4
Now the center of gravity of the resulting flat body,
R= [M*0 – (M/4)*(R/2)]/(M-M/4)
= -(MR/8)/(3M/4)
= -R/6
Negative sign shows that the center of gravity lies at opposite direction of the original COM at a distance R/6.
Comments (0)
