Per forum rules, you must show some attempt.3. The Attempt at a Solution
i added what i have so far can u help me solve the rest pleasePer forum rules, you must show some attempt.
i added what i have so far
the 2 things i added are the answers to the first two parts of the question for what is the work done by friction and just work done overallWhat do you think the two things you added represent?
um i know that the answer is right because this is on a web assign that my teacher assigned i understand i left the negatives out but i just add the negative into the final answer rather than thinking about the negative prior to thatFurther to PeterDonis' question:
Always show units and make it clear which question you are answering and what you are calculating.
The second equation you added is clearly wrong because you left something out on the left hand side.
You mean, work done by the hand. It is not clear what "work done overall" would mean.work done overall
however i would like assistance with the second half of the problem that would be awesome because that is the only part I am confused onum i know that the answer is right because this is on a web assign that my teacher assigned i understand i left the negatives out but i just add the negative into the final answer rather than thinking about the negative prior to that
ahhh oh yes that was my bad sryhowever i would like assistance with the second half of the problem that would be awesome because that is the only part I am confused on
well i know thermal energy is based off of the frictionahhh oh yes that was my bad sry
It is worth being more rigorous. It might not always be obvious what the sign of the answer should be.um i know that the answer is right because this is on a web assign that my teacher assigned i understand i left the negatives out but i just add the negative into the final answer rather than thinking about the negative prior to that
Right, so what does that imply for the answer to c?well i know thermal energy is based off of the friction
This is rather confusing. You seem to be clicking on the wrong Reply buttons, so you end up "replying" to one of your own posts instead of the one you are really responding to.ahhh oh yes that was my bad sry
sorry i figured out C tho i realized that its relative to friction work done the answer is 2.4This is rather confusing. You seem to be clicking on the wrong Reply buttons, so you end up "replying" to one of your own posts instead of the one you are really responding to.
That leaves d). Any thoughts?sorry i figured out C tho i realized that its relative to friction work done the answer is 2.4
well it probably has something to do with that equation from before but it must have to do with distance and forceThat leaves d). Any thoughts?
It is possible to do it that way - just introduce an unknown m for the mass and watch it disappear later when you simplify the equations.on to d) which I am still confused i would usually do 1/2 x m x v^2, however in this problem i do not have a mass to use
well the work done by the hand must become thermal energy because of the presence of friction so it must transfer into the surface its sliding acrossedIt is possible to do it that way - just introduce an unknown m for the mass and watch it disappear later when you simplify the equations.
But there is an easier way. Of the work done by the hand, what are all the places it can go?
You have calculated the work done by the hand and the work done by friction, and they do not add to zero. Where has the rest gone?well the work done by the hand must become thermal energy because of the presence of friction so it must transfer into the surface its sliding acrossed