Question

collect the following items. a)4 small paper cups b)two strips of the cardboard 20cm long,20cm width c)gum d)stapler e)sketch pen f)sharpened pencil take a scale draw crosses under the card board straps as shown in figure

fix the strips at the centre,putting one over the other they make a'+' sign. now fix the cups at the ends of the strips. colour one cup with sketch pen. all four cups should face in the same direction.
push a pin through the centre of the strips and attach the strips to the sharpened pencil. check that the strips rotate freely and when you blow on the v ups,
your anemometer is ready. counting the number of rotations for a minute will give you an estimate the speed of the wind.​

Answer 1

Answer:

4 small paper cups

Explanation:

4 small paper cups