A body is rotating uniformly about a vertical axis fixed in an inertial frame.

(d) zero. Explanation: Centrifugal force is a pseudo force needed in an non-inertial frame of reference when we still want to use the Newton's Laws. In this case the frame of reference is inertial, so there is no centrifugal...

(a) 10 cm/s, 10 cm/s 2  Explanation:  Velocity of the particle in a circular motion is equal to ωr , so if ω is constant the velocity is proportional to the radius....

(c) 0 Explanation:  Since the body is uniformly rotating, the resultant force on the particle P will be in the radial direction. So again the directions of A and B will be...

(c) horizontal and intersecting the axis Explanation:  Since the body is rotating uniformly, a particle not on the axis moves in a uniform circular motion. This circle will be horizontal with its center at...

(d)  continuously decreases.

Theta=wt+1/2alpha Tsq. By this we will get Theta=200. For first 10 and last 10 sec theta will be same therefore =400. And for 10 sec of middle is alpha ×100= 400. Total =400+400=800rad

(b) cannot be an inertial frame because the earth is revolving around the sun (d) cannot be an inertial frame because the earth is rotating about its axis. Explanation: A reference frame attached...

(c) the frame may be inertial but the resultant force on the particle is zero (d) the frame may be noninertial but there is a nonzero resultant force. Explanation:  (a) is incorrect because...

(d) zero. Explanation: Centrifugal force is a pseudo force needed in an non-inertial frame of reference when we still want to use the Newton's Laws. In this case the frame of reference is...

(a) 10 cm/s, 10 cm/s 2  Explanation:  Velocity of the particle in a circular motion is equal to ωr , so if ω is constant the velocity is proportional to the radius. Here the particle is...