Classify the following into Contact forces and Non-contact forces.
A rolling ball comes to rest, bring the unlike poles of the magnets in contact, pen slips off your hand, Lift a bucket of water, bring a straw rubbed with paper near the straw which is not rubbed with paper, carrying a load in bullock cart.
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A rolling ball comes to rest - contact force
bring the unlike poles of a magnet in contact -non -contact force
pen slips of your hand -non contact force
lift a bucket of water - contact force
bring a straw rubbed with paper near the straw which is not rubbed with paper - non contact force
carrying a load in bullock cart -contact force
Explanation:
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