CUP CENTRIFUGATION
Aim: To separate the two balls .
Concept :
when you swing an object around on a string or a rope the object will pit outwards on the string .this is called the centrifugal force and is caused by the inertia of object where it seeks to follow a straight line path.
Materials required: two transparent plastic cups, two ping pong balls, pencil, glue.
Procedure:
1. Take one plastic cup and drop both the ping pong balls in the cup.
2. Glue together both the rim of the cups using hot glue gun
3. Attach the pencil exactly perpendicular to the where both the both the glasses are attached
4. Place the model on the table and hold it upright using the extreme end pencil
5. Rotate it clock wise and observe
Observation:
when you place the glasses and spin them,the balls will be separated. The swinging glasses will make the balls fly towards the extreme ends.
Application:
1. children sitting in the roller coaster ride experience a outward force as the roller coaster rotates about its vertical axis which saves from the fall out from an upside down loop
2. a satellite can stay in orbit around the earth
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