Question

a body is rotating nonuniformly about a vetical axis fixed is an intertial frame. The resultant force on a particle of the body not on the axis is

• A. Vetical
• B. horizontal and skew with the axis
• C. horizontal and intersection the axis
• D. None of these

Answer 1

Answer: (C)

horizontal and intersection the axis

It is given that the body is rotating non uniformly about a vertical axis fixed in an inertial frame. So, the body will be moving in a uniform circular motion. This circle will be horizontal with its center at the intersecting point with the axis. So it will have a radial acceleration and thus a radial resultant force. So this force will be horizontal and intersecting the axis.