A small metal ball is suspended from the ceiling by a thread of negligible mass. The ball is then set in motion in a horizontal circle at an angle of 29 degrees from the top, so that the thread describes a cone. The acceleration of gravity is 9.8 m/s2 . a) What is the speed of the ball when it is in circular motion in m/s? b)How long does it take Tperiod for the ball to rotate once around the axis?

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.