A circular wheel is used in a laboratory experiment to measure distance travelled…
PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A circular wheel is used in a laboratory experiment to measure distance travelled along a straight line.
(i) Write the formula for the circumference C of a circle of radius r.
(ii) Give a brief reason, in one or two sentences, why multiplying the circumference of the wheel by the number of its complete revolutions gives the linear distance covered by a point on its rim.
(iii) The wheel has radius 14cm and makes 250 complete revolutions. Calculate, correct to the nearest metre, the distance travelled by the point on its rim.