5.1.1.3 Centripetal Acceleration and Problem Solving online

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3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah 5.1.1.3 Centripetal Acceleration and Problem Solving Due Jan 24 at 11:59pm Points 15 Questions 15 Available Jan 16 at 12am - Mar 22 at 11:59pm Time Limit None Allowed Attempts Unlimited Instructions In this activity, you will practice using centripetal acceleration and their understanding of forces to solve application problems Before you begin, you'll need a computer or tablet. You will be asked to submit a photo of your work at the end of this assignment. You can download and print the original handout here (https://onramps.instructure.com/courses/3820435/files/265668260/download? download frd=1). Take the Quiz Again ATTEMPT HISTORY Attempt Time Score KEPT Attempt 2 26 minutes 13.5 out of 15 LATEST Attempt 2 26 minutes 13.5 out of 15 Attempt 1 12 minutes 450utof 15* *Some questions not yet graded Score for this attempt: 13.5 out of 15 Submitted Jan 23 at 10:20am This attempt took 26 minutes. For the diagram below, you are looking down from above at a puck sliding on a frictionless tabletop. The puck is sliding at a constant speed along a circular fence https://onramps.instructure.com/courses/3820435/quizzes/10615139 115

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah and just leaves contact with the fence at position B. The fence and puck are also frictionless. Draw vectors and label them for any forces acting parallel to the table top on the puck at positions A and B using the drawing provided as a reference. You will submit your sketch in the Upload section at the end of this assignment. On the side views below, draw vectors and label them for any forces acting perpendicular to the tabletop. side viewat A R side view at B = You will submit your sketch in the Upload section at the end of this assignment. Question 1 1/1 pts https://onramps.instructure.com/courses/3820435/quizzes/10615139 2/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah Which of the forces above are inward forces? Correct! Normal Force Weight None Question 2 0/1pts Which of the forces above are outward forces? Normal Force You Answered Weight Correct Answer None Question 3 1/1 pts What would be the equation for the net force on the puck? Correct! Fnet :FC’:FN Fnet :FF Fnet =0 None of the above At position B draw a line at least an inch long showing the path the puck will travel after point. Additionally, draw and label a velocity and an acceleration vector on the puck at positions A and B. https://onramps.instructure.com/courses/3820435/quizzes/10615139 3/15

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3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah You will submit your sketch in the Upload section at the end of this assignment. Question 4 1/1pts How do you know where the puck will travel after point B? Your Answer: There would be no resistance at B Question 5 1/1 pts At position A is the net force on the puck zero? How do you know? Your Answer: The net force is not zero it experiences A centrifugal force towards the center of the circular motion keeping it on that path Question 6 1/1 pts At position B is the net force on the puck zero? How do you know? Your Answer: The net force is also not zero. it requires A centripetal force to maintain the circular motion in even though contact with the fence is just contact is just lost The car to the right is traveling around a curve at a constant speed. rear view of car Q Draw vectors and label them for each force acting on the car. You will submit your sketch in the Upload section at the end of this assignment. Question 7 0.5/1pts Which of the forces are acting inward? https://onramps.instructure.com/courses/3820435/quizzes/10615139 4/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah Select all that apply. Correct! Centripetal Force Correct Answer Frictional Force Weight Normal Force Question 8 1/1 pts Which of the forces are acting outward? Frictional Force Normal Force Weight Correct! None of the above Question 9 1/1 pts What is the direction car’s acceleration? Correct! Towards the center of the curve Follows the curve's path None of the above. Question 10 1/1 pts What is the equation for the net force acting on the car? Correct! Fret = Frp = pFy = pmg Fnet = mg Fnet — FN None of the above. https://onramps.instructure.com/courses/3820435/quizzes/10615139 5/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah Use the following information to answer the following questions. A woman flying aerobatics executes a maneuver as illustrated in Figure below: r=380m v =65 mls m= 55 kg Figure 1 Question 11 1/1 pts Determine the value of the centripetal force acting on the woman flying the airplane when at the top of the loop, as indicated in Figure 1. Correct! 611.5132 611 (with margin: 1) Construct a quantitative diagram of all relevant forces acting on the woman. You will submit your sketch in the Upload section at the end of this assignment. Question 12 1/1 pts Does the woman feel lighter or heavier than normal at this position? Explain. Your Answer: lighter because of the downward force acting upon the plane Later because of the downward force acting upon the plane. https://onramps.instructure.com/courses/3820435/quizzes/10615139 6/15

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3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah A popular amusement park ride operates as follows: riders enter the cylindrical structure when it is stationary with the floor at the point marked "a". They then stand against the wall as the cylinder then begins to rotate. When it is up to speed, the floor is lowered to the position marked "b", leaving the riders "suspended"” against the wall high above the floor. Use this information to answer the following questions. Question 13 1/1 pts What is the maximum period of rotation necessary to keep the riders from sliding down the wall when the floor is lowered from point "a" to point "b"? Correct! 1.7 1.7 (with margin: 0.3) Attach your free body diagram of the rider and and explanation of work (i.e. equations used). You will submit your sketch in the Upload section at the end of this assignment. Question 14 1/1 pts Upload: Submit a photo of your work here. https://onramps.instructure.com/courses/3820435/quizzes/10615139 7/15

3/7/24, 10:57 PM You may submit your work in one of the following ways: 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah Embed an image Upload a JPG or PNG using the Image Upload Upload a document Upload a Document Your Answer: https://onramps.instructure.com/courses/3820435/quizzes/10615139 8/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah https://onramps.instructure.com/courses/3820435/quizzes/10615139 9/15

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3/7/24, 10:57 PM _ . —————mmetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah Mechanics, Heat, and Sound (PHY 302K) / Y OnRamps e e i Handout 5.1.1.3: Centripetal Acceleration and Problem Solving 1) For the diagram below, you are looking down from above at a puck sliding on a frictionless tabletop. The puckis sliding at a constant speed along a circular fehcg and just leaves contact with the fence at position B. The fence and puck are also frictionless. a) On the top drawing draw vectors and label them for any forces acting parallel to the table top on the puck at positions A and B. b) On the side views below, draw Vv them for any forces acting perpen tabletop. ectors and label dicular to the sideviewatA [HE side view at B BEE ) Which of the forces above are inward forces? £3 and FY awe (n vy €HES d) Which of the forces above are outward forces? The cenfpifign BIbGe |5 The 2T LI, &) What would be the equation for the net force on s the puck? 5 e R AN {99 LY ~Copee = "_/\} f) On the top drawing at position B draw az line at least : an inch long showing the path the puck will travel 2 after point B. How do you know? Thee wovle he aofesTict 141 ax E g) On the bottom drawing, draw and label a velocity and an acceleration vector on the puck at positions A and B. 'h) At position A is the net force on the puck zero? H?Z\/[do( yO((U'knOV,\"?W’T(l" Y Karge ta naot Tevo LY < 515 A ((o'(( o ,'r [(: oW\l A5 1 e CeaT 90 < Cov ; pqalea Keeving v 1 & <wax 674\{;/« g s T /hﬂ ) At position B is the net force on the puck zero? ( L it L) 4 \/i([fi/ , How do you know? ~“fmicbmmitdine 13 42,260 BNE e - N, G0t e 1 C Ve Ta o ttan © Cercent atjom \ Laven Thof i C’ (7f§;’q£€ ‘%t'(’fi '((.3( ‘f—(’hcg G a2 l P o § ,"’ = o ) b | {9 4 ( ©Modeling Worksh i ' L g Workshop Project 2006 Unit VIll ws2 v3.0 gfi'}’ ml,UInE' xT A : ; | s e ek _ Mechanics, Heat, and Sound (PHY 302K)| 1 https://onramps.instructure.com/courses/3820435/quizzes/10615139 10/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah T 20 W NNl SRRt G A G g e o https://onramps.instructure.com/courses/3820435/quizzes/10615139 11/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah nd (PHY 302|O Mechanics: Heat, and Sou é Name: \\\})} OnRamps n flying the airplane i I O indi in Figure 1. a;hen at the top of the loop, as indicated in FIgUE e 512 ' e woman. b Construct a quantitative diagram of all relevant forces acting on th ' i Does the woman feel lighter or heavier than normal at this position? Explain. 126(77{b 5{6054 g9+ a Th~+ £0C//‘91/m1/‘1 {:0},({ {;l/(s'f{':, ,!'/{r‘id G Cht Plage, P Bl ©Modeling Workshop Project 2006 [ @ TEXAS Unit Vil ws2 3 0 Ihe Ui Ay o T ag Aoy i) M » https://onramps.instructure.com/courses/3820435/quizzes/10615139 12/15

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3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah ) P R A PSS Rl R S AR S e e e SR P S https://onramps.instructure.com/courses/3820435/quizzes/10615139 13/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah «J OnRamps 2) The car to the right is trav rear view of car _—‘—'—f (/nﬂ"( (0¢C Crlce (A ALT'ag Name: eling around a CUrve at a constan AR oo —) J 9 b) Which of the forces are acting inward? {nancd N O Folces ¢) Which of the forces are acting outward? Talards The (f/l d) What is the direction car's acceleration? Ty 9€ The Cure Caet~ e) What is the equation for the net force acting on the car? My = Figure 1 vy el eat, and Sound t speed. (PHY 302K) a) Draw vectors and label them for each force acting on the car. 3)A woman flying aerobatics executes a maneuver as illustrated in Figure below: r= 380 m v =65 s m = 55 ke (1t} L (2 esenie 6 5 (-’WCéé y . ©Modeling Workshop Project 2006 R R T e e https://onramps.instructure.com/courses/3820435/quizzes/10615139 Unit VIll ws2 v3.0 14/15

3/7/24, 10:57 PM 5.1.1.3 Centripetal Acceleration and Problem Solving: Mechanics, Heat, & Sound - HS - Wilkes, Deborah UnansweredQuestion 15 1/1pts Reflection: What is a question you still have after completing this activity? What is something new you learned? Your Answer: Quiz Score: 13.5 out of 15 https://onramps.instructure.com/courses/3820435/quizzes/10615139 15/15

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