Question

a force of 38 n is applied downward onto a desk of 70 kg. which of the following force diagrams is correct?

Explanation:

The problem states a downward force of 38 N is applied to a 70 - kg desk. We need to identify the force diagram where the 38 N force is directed downward (vertical direction) on the desk. The first two diagrams show horizontal forces (left - right), which do not match the downward application. The third diagram has a downward - pointing arrow labeled 38 N on the desk, which is consistent with the problem's description of a downward force.

Answer:

The third force diagram (with a downward arrow labeled 38 N on the 70 - kg desk) is correct.