Complete a free body diagram question

Complete a free body diagram question

A free body diagram question requires you to draw forces at specific angles from one or more starting points (called control points) on top of a background image.

Draw forces

You can draw the forces for a response to a free body diagram question in two ways:

• Freehand

• Force type menu

Freehand

You can draw forces using the freehand method for a free body diagram question:

1. Click on the control point of interest and drag your cursor to the angle of the force you want to draw. Release your cursor when the arrow is at the intended angle.

2. Click Choose a Type from the force type menu and select the force that's represented by the arrow you just drew in step 1.

3. Click on the background of the free body diagram response area to confirm your drawn force.

4. Repeat steps 1 to 3 for as many forces and control points as needed to answer the question.

Force type menu

You can draw forces using the force type menu for a free body diagram question:

1. Click Choose a Type from the force type menu to select the type of force you want to draw.

2. Enter a value in degrees (°) in the angle field that you want to use to draw the selected force.

3. Click Draw.

4. Click on the background of the free body diagram response area to confirm your drawn force.

5. Complete steps 1 to 4 for as many forces and control points as needed to answer the question.

Select drawn forces

Clicking on a force arrow selects it.

A selected force turns from black to blue and its handle appears (Example — the Normal Force (N) arrow is selected):

Edit drawn forces

You can edit these components of your drawn force(s):

• Label (Example — you meant to label a force as Normal Force (N) instead of Force of Gravity (Fg))

• Angle (Example — you meant to position the force arrow at 125° instead of 94°)

Label

To edit a drawn force's label:

1. Select the force arrow that you want to edit.

2. Select the intended force from the force type menu.

3. The selected force arrow is updated to your selection in step 2.

Angle

To edit a drawn force's angle:

1. Select the force arrow that you want to edit.

2. Click-and-drag the force's arrow handle to the intended angle.

Delete a drawn force

You can delete:

• Individual forces

• All drawn forces

Delete an individual force

To delete an individual force from the free body diagram response area:

1. Select the force that you want to delete.

2. Click Delete.

3. The selected force is deleted from the response area.

Delete all drawn forces

To delete all drawn forces from the free body diagram response area:

1. Click the hamburger menu of the response area.

2. Click Clear All.

3. Click Yes, clear all! to clear all drawn forces from the response area.

4. All drawn forces are deleted from the response area (if Yes, clear all! was selected at step 3).