PHYSICS - can someone check?
Suppose you wanted to break a meter stick over your knee. The cross section of a meter stick is rectangular. Will it be easier to break with
a.) the long side against your knee
b.) the short side against your knee?
I said it'd be easier to break the stick with the short side on your knee, since the length from the point on knee to where force is applied is greater in B than A. Is this correct?
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
do you have a diagram ?
There is no diagram, just the description as written above
Not the answer you are looking for? Search for more explanations.
But since we're learning torque, I assumed it had to do with the equation for torque
And since the greater the "r" the greater the torque, so I said it'd be easier for B
is that what ur saying is the best option?
Yeah, I said it'd be easier to break the stick with the short side against the knee
yeah what ever gives greater torque, so you want to apply force as far away from you knee as possible.
but the options are phrased weirdly, i cant make out which one's which xD
I was also confused at first since I wasn't sure if "against knee" meant that you were breaking it against knee at a certain point or if you were resting it at a certain point
But I assume it means when it's resting against your knee.
ok...this has turned into an English question :p, i would go with option A
best you draw a diagram for the answer
But the question doesn't differentiate between along or across. It just says
a) long side against your knee
b.) short side against your knee
So I think the diagram would look something like this
@ganeshie8 what do you think?
Yes, if you were to place the ruler sideways across your leg, it would be easier to break. It is because of torque, but it's mostly due to the material and the moments/forces that are created.|dw:1446530469943:dw| As you can see, there are 2 moments and 2 forces that are applied over the short length that is in contact with your knee.
Whereas (sideview)|dw:1446530566022:dw| in this scenario, there is only 1 moment and 1 force being applied. In order to break it, you will have to apply a larger force which will produce a larger moment in order to compensate.
I'm pretty sure it's not asking about "across your leg" versus "alongside your leg" like how you've displayed in your diagram
@jaeuni |dw:1446537786311:dw| According to baru's drawing. It's the same as mine but a different perspective
|dw:1446538208891:dw| If the question ends up being this scenario, then yes, the right side would be easier due to more leverage. The increase in leverage/length also for a greater deflection (bending) of the stick. At the top of the stick, there would be a greater tension (stretching), and at the bottom side of the stick, there is compression (internal pushing).