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Whiteboard Grading

Whiteboard Grading. Readability (size, neatness, color) Organization (flow of work) Physics ( general eqns , diagram , units) Presentation (does presenter know what the group did on the board) On task (during preparation time, presentation time). F t. F N. on hanging mass by cart.

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Whiteboard Grading

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  1. Whiteboard Grading • Readability (size, neatness, color) • Organization (flow of work) • Physics (general eqns, diagram, units) • Presentation (does presenter know what the group did on the board) • On task (during preparation time, presentation time)

  2. Ft FN on hanging mass by cart on cart by track Ft on cart by hanging mass 3rd Law Pair Fg on cart by Earth Fg on hanging mass by Earth

  3. Fghanging Fghanging on system by Earth on system by Earth OR Dot represents BOTH cart and hanging mass

  4. What if there is friction? Fghanging Fghanging Ffkcart Ffkcart on system by Earth on system by Earth on system by track on system by track OR

  5. Mass of glider: 0.3 kg • Hanging mass: 0.05 kg • Friction = 0.1 N • Calculate the acceleration of the cart/mass system. • Calculate the tension in the string.

  6. Fghanging Ffkcart Fghanging Ffkcart on system by Earth on system by track on system by Earth on system by track

  7. Now how do we calculate the tension in the string? Why can’t we use the force diagrams we just used?

  8. Ft FN on hanging mass by cart on cart by track Ft Ffk on cart by hanging mass on cart by track 3rd Law Pair Fg on cart by Earth Fg on hanging mass by Earth

  9. FN on cart by track Ft Ffk on cart by hanging mass on cart by track Dot represents JUST the cart Fg on cart by Earth

  10. Ft on hanging mass by cart Dot represents JUST the hanging mass Fg on hanging mass by Earth

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