NAME For the remainder of questions, asssme that the slide does have kinetic fri
ID: 1598886 • Letter: N
Question
NAME For the remainder of questions, asssme that the slide does have kinetic frietion (au 5. Which of the following equation gives W for JUST the downward trip (going down triangle I), assuming that Adam has mass m? (Hints: Work is the component of force in the direction of displacement times the displacement will need to find the force frierion work is negarve when the opposite to the marion) Present your reasoning. 6. Now derive an equation for W on Aam 2, the work done by friction during Adam's slide up the smaller fiction ramp Triangle 2? (Hint your answer should look roughly similar to one of the options in the previous question, but of course with triangle ii2 parameters) Present your reasoning. 7. Let W on be the total work done by sliding friction on Adam, from the top of the larger ramp to the top of the smaller ramp. (It will be the sum of the answers to the last two questions) Which of the following equations accurately states the conservation of energy for Adam's motion from the start to the end, the top ofthe smaller ramp? (v is his speed at the top of the smaller ramp) (B) mgh, (A) mngh, by Adan by Adam (C) Neither of the above two equations gets it right! Briefly, present your reasoning. (fyour answer is C, what should it be and why?)Explanation / Answer
5. Frictional force is given as:
Ff = N
Where
N is the force between the two surfaces, or the normal force. N = mg(cos)
is the coefficient of friction
Workdone by friction = Frictional force * Displacement
The displacement on the sliding down the triangle is L1.
Hence the answer is option (D) w = 1mgL1(cos)
7. The workdone by friction is same as the above. Changing the triangle two parameters, the workdone comes out to be
W = 2 mgL2(cos)
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