NCERT Solutions Class 11 Physics chapter 2 Motion in a Straight line with Video Explanation
NCERT Solutions Class 11 Physics chapter 2 Motion in a Straight line with Video Explanation - Exercise Solution: 2.1 In which of the following examples of motion, can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the ground. (d) a tumbling beaker that has slipped off the edge of a table. Solution : When the size of an object is very small compared to the scale of observation, the object can be considered as a point object. (a) The size of railway carriage is very small compared to the distance between the two stations. Therefore , the carriage can be considered a point object. (b) The size of the monkey is very small compared to the distance convered by the cyclist therefore , monkey can be considered a point object. (c) The size of the spinning cricket ball is compa...