AP® Physics C: Mechanics

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Normal Force for a Pulled Block

APPHMC-GYUCT4

A block of mass $5.0\text{ kg}$ is placed on a horizontal frictionless surface. The block is pulled to the right with a constant force of magnitude $20.0\text{ N}$.

What is the normal force between the block and the surface?

A

$5.0\text{ N}$

B

$20.0\text{ N}$

C

$25\text{ N}$

D

$49\text{ N}$

E

$100\text{ N}$