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Question

A block of weight 9.8 N is placed on a table. The table surface exerts an upward force of 10 N on the block. (Given g $$=$$ 9.8 m/s$$^2$$) This follows from:


A
the block exerts a force of 10 N on the table.
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B
the block exerts a force of 19.8 N on the table.
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C
the block exerts a force of 9.8 N on the table.
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D
the block has an upward acceleration.
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Solution

The correct options are
A the block exerts a force of 10 N on the table.
C the block has an upward acceleration.
According to Newton's third law, if the table exerts $$10 N$$ force on the block, the block will also apply same force on the table. As $$9.8 N< 10 N$$, the net force is in upward direction and thus, the block has an upward acceleration.
Ans:(A),(D)

Physics

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