5. Groups of physics students are each given a force scale (to measure an applied force of magnitude Fa ), an electronic balance (to measure the mass, m), a rectangular wooden block with a hook at one end, a protractor, and a piece of string. Each group must determine the force of kinetic friction acting on the block as it is pulled with a constant velocity along a horizontal lab bench. However, the applied force must be at an angle 0 above the horizontal. (a) Draw a system diagram and an FBD of the block for this investigation.

5. Groups of physics students are each given a force scale (to measure an applied force of magnitude Fa ), an electronic balance (to measure the mass, m), a rectangular wooden block with a hook at one end, a protractor, and a piece of string. Each group must determine the force of kinetic friction acting on the block as it is pulled with a constant velocity along a horizontal lab bench. However, the applied force must be at an angle 0 above the horizontal. (a) Draw a system diagram and an FBD of the block for this investigation.