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Zanzabum
3 years ago
9

Which of the following would increase friction?

Physics
1 answer:
PolarNik [594]3 years ago
5 0
Aside from sand, the rest is used to reduce friction between to objects, acting much more like a lubricant. This is on the context that the rougher the surface, the more friction is created. Then again, factors are to be considered especially as to what objects are in contact with each other when these options are added to the intention of increasing friction and finding out which doesn't do the trick. As for this case, since it there isn't any specifics and as to the kind of friction, then sand would be the likely answer.
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Answer:

\omega = \frac{(R^2\omega_o}{(R^2 + r^2)}

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As we know that there is no external torque on the system of two disc

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L_i = L_f

now we have

L_i = (\frac{1}{2}MR^2)\omega_o

also we have

L_f = (\frac{1}{2}MR^2 + \frac{1}{2}Mr^2)\omega

now from above equation we have

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now we have

\omega = \frac{MR^2\omega_o}{(MR^2 + Mr^2)}

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6 0
3 years ago
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2 years ago
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1 year ago
A block of ice at 0 degrees C, whose mass is initially 62 kg, slides along a horizontal surface, starting at a speed of 5.48 m/s
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The mass of ice melted as a result of friction between the ice and the horizontal surface is 2.78g

<u>Explanation:</u>

Given,

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Distance, x = 26.8m

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Mass of ice melted = ?

We know,

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and

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