The first thing we must do for this case is the sum of forces in a horizontal direction.
We have then:
Substituting values we have:
From here, we clear the mass of the object:
We now look for the weight of the object.
Where,
g: acceleration of gravity (9.8 m/s^2)
Substituting values:
the weight of the object is:
option 4
2.56 years
Explanation:
Payback period calculates the amount of time it takes to recover the amount invested in a project from its cumulative cash flows.
payback period = amount invested / cash flows
cash flows = $510,000 - $360,000 = $150,000
$384,000 / $150,000 = 2.56 years