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A 1380-kg block of granite is dragged up an incline at a constant speed of 1.34 m/s by a steam winch (Fig. 11-32). The coefficient of kinetic friction between the block and the incline is 0.41. How ...
Nahal Ahamed's user avatar
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-5 votes
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A student attempts to study a temperature of absolute zero by using a constant volume gas thermometer. According to his experience the pressure of triple point of water was 4.0010⁴ N/M² and the normal ...
NeOkiMe Okindo's user avatar
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My son is practicing with his high school Science Olympiad team and came across this question: His source includes an answer, without explanation, that the coefficient of friction is $\mu\approx3.3$. ...
MarkP's user avatar
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In this question , i believe the upper branch acts as an easier path for current to flow and all of it will pass through the branch and then the capacitor on the extreme left , even when switch 2 is ...
Ali Kalam's user avatar
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The question is in the image but I am conflicted on my result. My approach was to calculate the current source first; $2 \times 5\Omega$ in series, $2 \times 3\Omega$ in series and their result is in ...
aymhh's user avatar
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2 answers
107 views

I'm having trouble solving problems like this. Which actual fundamental concepts should I review again, and which types of problems should I practice again?
Thats BlackidoZ's user avatar
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4 votes
2 answers
284 views

First a ball gets an impulse $J$. Why can we say that $$Jh = I_cm w,$$ when it is clear that the friction force is also acting around the CM of the ball. When balacing forces around the CM we see that ...
Tcq's user avatar
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1 vote
0 answers
122 views

TL,DR:When should we exclude element considered while trying to compute force on itself due one half of a system ,and when not to? Say we are required to find the force acting on two vertically cut ...
A James's user avatar
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I'm a current AP Physics 2 high school student with a test in a few days; a swift reply would be very much appreciated. Thank you in advance. My question is concerning the formula for the change in ...
theFavorite's user avatar
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I am studying the Effective Field Theory for extended objects proposed by Goldberger and Rothstein. This theory studies a binary system in inspiral phase. By means of the virial theorem we get a ...
julian's user avatar
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-1 votes
2 answers
59 views

If you plot a graph showing the variance of electric potential between two charges, does the middle have a maximum or minimum electric potential and why?
KN307's user avatar
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-1 votes
1 answer
78 views

Problem statement: A block of mass m and a cylinder of mass $2m$ are released on a rough inclined plane. The plane is inclined at an angle $θ=45$ degrees with the horizontal. The coefficient of ...
Raman Medatiya's user avatar
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1 answer
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I was talking with a prof about loop de loop problems and how they where usually solved in terms of energy when they mention that they could maybe be solves in terms of kinematics but that they’d ...
Cat's user avatar
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1 answer
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From a circular disc, a circular portion of radius R/2 has been removed....it is asked if the axis YY' is principal axis or not...so my first intuition was since the axis is not symmetric this should ...
Riya's user avatar
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0 votes
2 answers
71 views

In fluid dynamics class, I saw a statics problem that dealt with buoyancy using Archimedes’ principle. The problem stated the following: A wooden plank with a cross section of 7.5 cm × 30 cm and a ...
Turing's user avatar
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