Do either of you do the modified atwood for building N2L? I was thinking I'd switch to the fan carts this year for N2L but stuck to my traditional mod-atwood. Plus, my lab practical is mod-atwood. Wondering if I should make the switch next year.
With wireless force sensors attached to the cart or sensor carts with built-in wireless force sensors, students measure the force on the cart directly. Vary the hanging mass and graph F vs a, slope is mass of cart. Doesn't work for varying mass of cart as tension will change for same hanging mass.
I've never done modified atwood. I used to do pulling with springs at a school that had equipment for that. I've been doing fan carts since then. It's a lot more direct, I think, so lower cognitive load as they do the experiment and make sense of things?
Always done opposite here. Wondering, how does fan cart work? Collect data of m and a by using same fan, change mass on it, use position sensor to measure slope of v-t? Noticing y=1/x pattern so ma was constant,-->N2?
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