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

Question

Amirah Mcguire

Physics

30 August, 14:29

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

+1

Answers (1)

Know the Answer?

Gavyn Alvarado · Answer 1

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.