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# Stacked Blocks

APPHMC-CIUCXJ

Consider the stack of blocks shown above. The system is in static equilibrium.

How much force does the block with weight $40 N$ exert on the block with weight $20 N$?

The bar with weight $10 N$ is horizontally balanced such that equal portions of its weight are distributed on the two ends.

A

$25 N$

B

$30 N$

C

$35 N$

D

$50N$

E

$65N$