PhET Forces Lab

Go to the "Forces and Motion: Basics" simulation athttps://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_en.html.

1) FORCE EXPLORATION: Click on the "Net Force" section of the simulation, check all the information boxes ("Sum of Forces," "Values," and "Speed"), and play around with the figures. Summarize some interesting findings in 2 -3 sentences.

2) MOTION EXPLORATION: Click on the "Motion" section of the simulation, check all the information boxes, and play around with the figures. Summarize some interesting findings in 2 -3 sentences.

3) FRICTION EXPLORATION: Click on the "Friction" section of the simulation, check all the information boxes, and play around with the figures. Summarize some interesting findings in 2 -3 sentences.

4) CALCULATE AN UNKNOWN MASS:

Setup: Click on the "Acceleration" section of the simulation. Check all the information boxes except for masses. Slide the Friction setting all the way down to none. Select one object or person and use the information you can view (without checking "Masses") to determine its mass.

4.1) Screenshot an image of your simulation and paste it here:

4.2) List all the information you read from the simulation:

4.3) Draw a free body diagram:

4.4) Show your calculations:

4.5) What is the mass of the object?

5) CALCULATE THE FORCE OF KINETIC FRICTION:

Setup: Remain on the "Acceleration" section. Check the box for"Mass." Uncheck "Forces" and "Sum of Forces" so you don't see labels of the magnitudes of force. Slide Friction up to some random non-zero amount.

5.1) Screenshot an image of your simulation and paste it here:

5.2) Which object are you using for your simulation?

5.3) List all the information you read from the simulation:

5.4) Draw a free body diagram:

5.5) Use the Acceleration and Applied Force readings to calculate the magnitude of the force of kinetic friction: