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Physics, 16.11.2019 00:31 jolleyrancher78
In lecture, dr. selby used atmospheric air pressure to crush a can, by sucking the air out of it. (a) calculate how many newtons of force are exerted on the can. the dimensions of the un-crushed can are 25 cm × 18 cm × 11 cm. you may assume that all of the air was sucked out of the can. (b) compare this force to your own weight. (c) why don’t cans collapse all the time
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Physics, 22.06.2019 19:30
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
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In lecture, dr. selby used atmospheric air pressure to crush a can, by sucking the air out of it. (a...
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