Saturday, 11 August 2012

Height of a room

You need to measure the height of an isolated room. There is a bulb hanging from the roof of the room such that it just touches your head while you are in standing position. You are given a meter scale and an alarm clock.

1 comment:

  1. With the bulb hanging, you can make a pendulum out of it and measure its time period using the alarm clock. You can calculate the length of the pendulum using the time period formula of pendulum and can measure your own height using the metre scale. Thus, you can measure the height of room