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29 February, 16:55

An empty office chair is at rest on a floor.

Consider the following forces:

1. A downward force due to gravity;

2. An upward force exerted by the floor; and

3. A net downward force exerted by the air.

Which force (s) act on the office chair?

1. None of the forces act on the chair since

it is at rest.

2. All three forces

3. 1 only

4. 1 and 2 only

5. 2 and 3 only

its is not 1 i am guessing 4

+2
Answers (1)
  1. 29 February, 17:23
    0
    All three forces

    The downward forces are the pressure from the air and the weight of the chair and the upward force from the ground; these forces are balanced.
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