NCERT Exercise 3.14 - Motion in a Plane
Question: A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. The stone makes 14 revolutions in 25 s. What is the magnitude and direction of acceleration of the stone?
Answer: Acceleration **? 9.9 m s⁻²** directed **toward the centre** of the circle.
Full step-by-step NCERT solution with diagrams on Something by Zero.