Question

If the object represented by the FBD below has a mass of 3.5kg, what is the acceleration of the object?

Answer 1

Answer:

The acceleration of the object = 5.7 m/s^2 up

Explanation:

Since the sum of forces on the x-axis is 0, we will make use of the forces on the y-axis

$\sum f_y=ma$$\begin{gathered} 30-10=ma \\ \\ 20=3.5a \\ \\ a=\frac{20}{3.5} \\ \\ a=5.7\text{ m/s}^2 \end{gathered}$

The acceleration of the object = 5.7 m/s^2 up (Since the larger force acts upwards)