submission_208709734

Graded Exam 2 Student Tugsbold Shinebayar Total Points 87 / 100 pts Question 1 Problem 1 10 / 10 pts 1.1 Part A 2 / 2 pts  + 2 pts Correct + 1 pt Stated that it points towards the center of the circle, but got the direction wrong or did not state the direction + 0 pts Incorrect/blank 1.2 Part B 4 / 4 pts  + 4 pts Correct (including forces, labeling, and the normal force longer than the weight force). + 3 pts Mostly correct, with one small error + 2 pts Mostly correct, with multiple errors + 0 pts Incorrect/blank 1.3 Part C 4 / 4 pts  + 4 pts Correct (or consistent with an incorrectly-drawn FBD) + 3 pts Correct approach, but with minor mistakes + 2 pts Correct approach, but with major mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank 

Question 2 Problem 2 5 / 5 pts  + 5 pts Correct + 4 pts Correct approach, but with minor mistakes + 3 pts Correct approach, but with several mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank Question 3 Problem 3 6 / 6 pts 3.1 Part A 4 / 4 pts  + 4 pts Correct + 3 pts Correct approach, but with minor mistakes + 2 pts Correct approach, but with major mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank 3.2 Part B 2 / 2 pts  + 2 pts Correct (or consistent with previous incorrect answer) + 1 pt Correct approach, but with some mistakes + 0 pts Incorrect/blank Question 4 Problem 4 5 / 5 pts  + 5 pts Correct (either + or - as the question only asks for speed) + 4 pts Correct approach, but with minor mistakes + 3 pts Correct approach, but with several mistakes or a major mistake + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank

Question 7 Problem 7 12 / 14 pts 7.1 Part A 2 / 4 pts + 4 pts all correct  + 2 pts : correct. The problem did not require plugging in values, so writing , or are all fine. + 1 pt : correct approach, but with some mistakes + 2 pts : correct. The problem did not require plugging in values, so writing , or are all fine. + 1 pt : correct approach, but with some mistakes + 0 pts Incorrect/blank 7.2 Part B 5 / 5 pts  + 5 pts Correct (or consistent with previous incorrect answer) + 4 pts Correct magnitude, but incorrect direction (or direction not stated) + 3 pts Correct approach, but with several mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank 7.3 Part C 5 / 5 pts  + 5 pts Correct (or consistent with previous incorrect answer) + 4 pts Correct magnitude, but incorrect direction (or direction not stated) + 3 pts Correct approach, but with several mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful + 0 pts Incorrect/blank F net , y T y T sin θ 0.8 T F net , y F net , x T x T cos θ 0.6 T F net , x

Question 8 Problem 8 7 / 12 pts 8.1 Part A 3 / 6 pts + 2 pts Wrote out the work-energy equation in full, including . + 1 pt Partially wrote out the work-energy equation (e.g. without including , but jumping directly to .) + 6 pts Correct answer.  + 3 pts Correct approach, but with some mistakes + 2 pts Correct approach, but with multiple mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful. + 0 pts Incorrect/blank 8.2 Part B 4 / 6 pts  + 3 pts Wrote out the work-energy equation in full. + 2 pts Partially wrote out the work-energy equation. + 6 pts Correct answer (or consistent with previous incorrect approach in part A). + 2 pts Correct approach, but with some mistakes  + 1 pt Correct approach, but with multiple mistakes + 1 pt Attempted to use a relevant physics equation, but were unsuccessful. + 0 pts Incorrect/blank W nc W = nc 0 Δ U = g −Δ U s

Question 10 Problem 10 16 / 16 pts 10.1 Part A 4 / 4 pts  + 2 pts : correct. + 1 pt : correct approach, but with some mistakes  + 2 pts : correct. + 1 pt : correct approach, but with some mistakes + 0 pts Incorrect/blank + 1 pt Mostly wrong but some relevant correct mathematical formulas 10.2 Part B 6 / 6 pts  + 6 pts Correct (or consistent with previous incorrect answers) + 4 pts Correct approach, with minor mistakes + 2 pts Correct approach, with major mistakes + 0 pts Incorrect/blank + 1 pt Some correct concepts and formulas 10.3 Part C 2 / 2 pts  + 2 pts Correct (or consistent with previous incorrect answers) + 1 pt Correct approach, with some mistakes + 0 pts Incorrect/blank 10.4 Part D 4 / 4 pts  + 4 pts Correct (or consistent with previous incorrect answers) + 3 pts Correct approach, with minor mistakes + 2 pts Correct approach, with major mistakes + 0 pts Incorrect/blank p x p x p y p y