contestada

When floating a ping-pong ball with a hairdryer, which two forces are balanced?

Respuesta :

The force of gravity and the force of air

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There are two forces which are being balanced :

(Ⅰ) The force of gravity which is pushing the ping-pong ball downwards.

(Ⅱ) The force of the air that's coming from hairdryer which is pushing ping-pong ball upwards.

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