In the case above, the sum of forces on node 2 (upper-left) is said to be zero.
<h3>What is net
force?</h3>
If any object is said to be falling at constant speed. The net force is often known to be zero.
in the case above, you see that 2 and 3 node is falling down therefore, node 1 and 4 will be zero.
So, In the case above, the sum of forces on node 2 (upper-left) is said to be zero.
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