Question

please answer this question clearly and make sure to include all ( Criteria for adequate performance ) that shows in the table below the question

please explain by typing the words not by the hand, thank you

2. Archimedes once said that given a long enough lever, and a firm spot to place the fulcrum (pivot), he could (in theory) move the Earth. More practically, let's suppose you want to lift a 1000 kg boulder that happens to have landed in your back garden. a. Imagine you have a long (and strong) wood plank to use as a lever. Use your knowledge of torque and static equilibrium to decide where you should place the pivot/fulcrum in relation to yourself and the boulder. Should you place the pivot/fulcrum closer to the boulder, closer to yourself, or right in the middle? Explain your reasoning b. Estimate how long a lever (wood plank) you would need to lift this 1000 kg boulder and where you would place the pivot in order to do so. Draw a clear diagram. List all the assumptions you make and quantities that you will have to estimate to solve this problem. Provide calculations as needed to iustify your answer Rubric Item Clarity Criteria for adequate performance Student explains what he/she is doing and why. Explanation is clear, sufficiently detailed understanding P/F , easy to follow, and shows Representations and representationalTwo or more representations are constructed according to consistency accepted standards learned in class, and the representations are consistent with each other. Student is able to explain in words how he/she checked that each representation is consistent with the other Is able to choose and apply productiveMathematical procedure is fully consistent with the problem mathematical procedures for solving the problem( Approach is physically reasonable description. Procedure is free of major conceptual errors Final answer is meaningful All relevant physical parameters of the problem are accounted for and handled in a way that is consistent with real-life ex ience

Answer 1

AMwer A duar dioa hot duvibes the givun dota wooden plonk P9 wcrum (pivot) mb mos of boulder m mos of berson → Distan(L of boulder and Person fYbm peAt pivot) fulecrum s bo lift he boude or pyson ter should be grcaber han of boudu

rm b >m -> So PiNot should be lasd clase to the bould LS Conide lhe mom person Yp 즈 1x1000 According to our estimat, length