At the instant shown, the 50-kg projectile travels in the vertical plane with a speed of v=40 m/s. Determine the tangential component of its acceleration and the radius of curvature of its trajectory at this instant.

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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.