Answers

  • Brainly User
2015-06-11T21:10:42+05:30
Because it has smaller area of contact as compared to finger .The large pressure pierces balloon easily 
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2015-06-11T21:58:39+05:30
THIS IS BECAUSE, SMALLER THE AREA OF CONTACT, GREATER IS THE EFFECT OF FORCE. A NEEDLE IS HAVING A SHARP EDGE THAN A FINGER. THEREFORE, THE AREA OF CONTACT DECREASES AND IT BECOMES MUCH EASIER TO BURST THE BALLOON.
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