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

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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