Wait a min. At 11:26 you can't have -1J of workdone. Coz if your hamburger moves to the right(+) that meant you are applying a force in the rightward direction (+) or if your hamburger moves left(-) that meant you must be applying leftward (-) force. Hence, the work done is positive.😎😎
There's an error in the explanation. You would get this plot if the hamburger were already in motion (moving to the right) and you were applying a negative force (to left) to slow it down a bit then eventually pushing it to the right. The graph is correct and the result is correct, but the explanation is not correct.
You have negative work done when it is in the negative direction(in this case left). He states at 9:59 that the hamburger was initially pushed to the left at a negative velocity(negative because left). Then it starts getting pushed to the right. The overall energy ended up being positive because there was more work done over more displacement in the positive (right) direction.
This video is gold. I wonder why it doesn't have more views.
i love this guys so much.He thinking like he is student.
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Excellent explanation!
Very nice to think differently
How do you calculate time needed to perform work from the graph given?
Really it's good
beautiful
dobar dan profesorka
thank you !!!
Well done ..😊😊
Good explanation
Isn't work a scalar quantity? Which mean that the direction doesn't matter and thus the work done for the last problems is 5J?
Nice
Isn't the entire infinitely small rectangle thing just using calculus, as in taking a Riemann integral?
Swathy Natarajan Well some Physics does require Calc.
yeah pretty much. In physics you use calculus and the work done by a varying force is the integral of Fxdx from x1 to x2.
Wait a min. At 11:26 you can't have -1J of workdone. Coz if your hamburger moves to the right(+) that meant you are applying a force in the rightward direction (+) or if your hamburger moves left(-) that meant you must be applying leftward (-) force. Hence, the work done is positive.😎😎
There's an error in the explanation. You would get this plot if the hamburger were already in motion (moving to the right) and you were applying a negative force (to left) to slow it down a bit then eventually pushing it to the right. The graph is correct and the result is correct, but the explanation is not correct.
You have negative work done when it is in the negative direction(in this case left). He states at 9:59 that the hamburger was initially pushed to the left at a negative velocity(negative because left). Then it starts getting pushed to the right. The overall energy ended up being positive because there was more work done over more displacement in the positive (right) direction.
@@karenlewis6750 that's right.
Nice