Consider an object on an inclined plane. Identify and describe all the forces acting on it, including their direction and point of application.

Step 1: Analyze , Question 1.
The body (S) is on an inclined plane. The forces acting on it are:

• Weight ($\vec{P}$): Acts vertically downwards, applied at the center of mass of (S).
• Tension ($\vec{T}$): Applied by the dynamometer, acting upwards along the inclined plane.
• Normal Reaction ($\vec{R_N}$): Applied by the inclined plane, perpendicular to the surface, acting upwards.
• Friction Force ($\vec{f}$): Applied by the inclined plane, parallel to the surface, opposing the tendency of motion. Since tension is pulling up the incline, the tendency is to slide down, so friction