A conical pendulum consists of a mass `M` suspended from a strong sling of length `l`. The mass executes a circle of radius `R` in a horizontal plane with speed `v`. At time `t`, the mass is at position `Rhati` and `vhatj` velocity. At time `t` the angular momentum vector of mass `M` about the point from which the string passes on the ceiling is A. `MvRhatk`B. `Mvlhatk`C. `Mvl[sqrt((l^2-R^2)/l)hati+R/lhatk]`D. `-Mvl[sqrt((l^(2)-R^(2))/l)hati+R/lhatk]`

A conical pendulum consists of a mass `M` suspended from a strong slin

1.	A conical pendulum consists of a mass `M` suspended from a strong sling of length `l`. The mass executes a circle of radius `R` in a horizontal plane with speed `v`. At time `t`, the mass is at position `Rhati` and `vhatj` velocity. At time `t` the angular momentum vector of mass `M` about the point from which the string passes on the ceiling is A. `MvRhatk`B. `Mvlhatk`C. `Mvl[sqrt((l^2-R^2)/l)hati+R/lhatk]`D. `-Mvl[sqrt((l^(2)-R^(2))/l)hati+R/lhatk]`
Answer» Correct Answer - C From the figure in questions position vector if mass `vecr=Rhati-sqrt(l^(2)+R^(3)hatk)` Linear moment `vecp=Mvhatj` `vecL=vecvxxvecp` substituting the values, we get result

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