Question

7/21/22, 7:37 AMProblem Set ThreeNotes: Use 9.8 m/s 2 for the acceleration due to gravity. Formust be expressed in m/sLaw calculations, mass must be expressed in kg and velocity.A steady 45 N horizontal force is applied to a 15kg object on a table. The object slides against a friction force of 30 N. Calculate the acceleration of the object in m/s.

Answer 1

Given:

The mass of the object is

`m=15\text{ kg}`

The applied force on the object is

`F=45\text{ N}`

The frictional force on the object is

`f=30\text{ N}`

To find:

The acceleration of the object

Step-by-step explanation:

The net force on the object is

`\begin{gathered} F_(net)=F-f \\ =45-30 \\ =15\text{ N} \end{gathered}`

The acceleration of the object is,

`\begin{gathered} a=(F_(net))/(m) \\ =(15)/(15) \\ =1\text{ m/s}^2 \end{gathered}`

Hence, the acceleration is

`1\text{ m/s}^2`