Answer :

To find the normal force acting on the couch, we can use the formula for normal force, which is:

[tex]\[ \text{Normal Force} = \text{mass} \times \text{acceleration due to gravity} \][/tex]

Here's how to solve it step-by-step:

1. Identify the mass of the couch: The mass of the couch is given as 124 kg.

2. Use the standard acceleration due to gravity: On Earth's surface, the acceleration due to gravity is approximately [tex]\(9.8 \, \text{m/s}^2\)[/tex].

3. Calculate the normal force:
- Multiply the mass of the couch by the acceleration due to gravity:
[tex]\[
\text{Normal Force} = 124 \, \text{kg} \times 9.8 \, \text{m/s}^2 = 1215.2 \, \text{N}
\][/tex]

Therefore, the exertion of normal force acting on the couch is [tex]\(1215.2 \, \text{N}\)[/tex].

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Rewritten by : Barada