A horizontal force of 480 n is applied to a stationary wooden box in one direction and a 600 n horizontal force is applied in th
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We have point 
, so first calculate 
. There will be:
Now, we can write the equation of the normal line as:
Normal line (and every line) crosses x-axis when y = 0, so coordinates of A:
Now, we can write the equation of the normal line as:
Normal line (and every line) crosses x-axis when y = 0, so coordinates of A: