A student attaches a ball to the end of a 0.6 m long rope and then swings it in a vertical circle. The speed of the ball is 4.5 m / s at its highest point and 6.3 m / s at its lowest point. Determine its acceleration in: a) Its highest point, and b) Its lowest point

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A:

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A: The velocity of the ball can be calculated as follows,

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A: concept:

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Q: acceleration

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A: Given that: r=1.76 ma→=(18.5i^+16.2j^) m/s2

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A: The relation for the acceleration is given in terms of velocity and radius. a=v2r

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.