Physics Whiteboard Problems System Schemas and Force Maps

<strong>Physics</strong> <strong>Whiteboard</strong> <strong>Problems</strong> <strong>System</strong> <strong>Schemas</strong> <strong>and</strong> <strong>Force</strong> <strong>Maps</strong>REMINDERSDoes your system schema have a system boundary? ♦ In your force map, did you represent the system with a particle?Is it obvious when you intend two forces to be equal or when you intend one force to be greater than another?Did you fully label your forces using the “on ... by ...” notation?1. Draw a system schema for the jack-o-lantern sittingon the porch.Draw a force map for the jack-o-lantern.2. Draw a system schema for the ch<strong>and</strong>elier which issuspended from the ceiling by a chain.Draw a force diagram for the ch<strong>and</strong>elier.3. Draw a system schema for the refrigerator as theperson pushes horizontally on it, but is not strongenough to make it move.Draw a force map for the refrigerator.

REMINDERSDoes your system schema have a system boundary? ♦ In your force map, did you represent the system with a particle?Is it obvious when you intend two forces to be equal or when you intend one force to be greater than another?Did you fully label your forces using the “on ... by ...” notation?4. Draw a force map for the paper snow flake.Draw a systemschema for thepaper snowflakesuspendedfrom the ceilingby two strings.5. A construction worker pulls up on a cinder block atan angle, but not hard enough to make it move. Draw asystem schema for the cinder block.Draw a force map for the cinder block.6. The warehouse worker pushes down at an angle onthe stack of boxes, but not hard enough to make themmove. Draw a system schema for the stack of boxes.Draw a force map for the stack of boxes.7. A book is held in place on aslanted, frictionless book shelf.Draw a system schema for thebook.Draw a force map for the book.<strong>Physics</strong>

REMINDERSDoes your system schema have a system boundary? ♦ In your force map, did you represent the system with a particle?Is it obvious when you intend two forces to be equal or when you intend one force to be greater than another?Did you fully label your forces using the “on ... by ...” notation?8. The car is parked on the hill. Friction preventssliding. Draw a system schema for the car.Draw a force map for the car.9. Draw a system schema for the sign, which is held inplace by two ropes.Draw a force map for the sign.Eat atMoes11. Draw a system schema for a nail that has beenpicked up by a magnet.Draw a force map for the nail.12. The book is held against the wall whenthe student pushes on it. Draw a systemschema for the book.Draw a force map for the book.physicsschema for the ball.13. The basket ball is heldagainst the ceiling by WiltChamberlain pushing up on it atan angle. Draw a systemDraw a force map for the ball.