Esther has put her puppy, Molly, on a skateboard, and has attached a rope to the...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Esther has put her puppy, Molly, on a skateboard, and has attached a rope to the skateboard in order to give Molly a ride. At time t = 0, Esther starts pulling on the rope. She is pulling upward at an angle of 37. Once she is up to speed (at time t), she runs along at a constant rate until a time t2. A little after that, her mother yells at her and she stops. While Esther is pulling, draw a system schema and free-body diagrams for Molly and the skateboard that will allow you to identify the forces that each of them will feel. We will label the forces so as to identify the kind of force (normal = N, tension = T, friction = f, and weight = W) and the actors (the one feeling the force and the one causing it: Esther = E, Skateboard = S, Molly = M, the rope =R). You can ignore the sliding friction between the skateboard wheels and the floor. 11% Part (a) Given that we are viewing Esther and Molly so that Esther is pulling the rope and moving to the left, in which direction do the following forces point? Use the compass rose at the right to specify directions or choose "0" if the force is zero. fsM 11% Part (b) TRS A 11% Part (c) fs 11% Part (d) Ns A 11% Part (e) While Esther is speeding up, what is the direction of the net force that is acting on the skateboard? 11% Part (f) While Esther is running at a constant speed, what is the direction of the net force that is acting on the skateboard? A 11% Part (g) Molly weighs 20 lbs, the skateboard weighs 3 lbs, and Esther gets the skateboard up to a speed of 2 m/s after a time of 3 s and keeps running for another 3 s. Do you have enough information to figure out the force that Esther exerts between 0 and t? Between t and t? If you don't explain what additional information you need. 11% Part (h) If your answer was yes, calculate the force that Esther exerts between 0 and t in newtons. 11% Part (i) If your answer was yes, calculate the force that Esther exerts between t and t in newtons (give 3 significant figures). Fo = || N sin() cos() tan() cotan() asin() acos() B K 37 37 37 J 37 37 37 37 37 E H Grade Summary Deductions Potential 0% 100% () 7 8 9 HOME 5 6 E^^4 * 12 3 - 0 . END Submissions Attempts remaining: (2% per attempt) detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians + O BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback. Esther has put her puppy, Molly, on a skateboard, and has attached a rope to the skateboard in order to give Molly a ride. At time t = 0, Esther starts pulling on the rope. She is pulling upward at an angle of 37. Once she is up to speed (at time t), she runs along at a constant rate until a time t2. A little after that, her mother yells at her and she stops. While Esther is pulling, draw a system schema and free-body diagrams for Molly and the skateboard that will allow you to identify the forces that each of them will feel. We will label the forces so as to identify the kind of force (normal = N, tension = T, friction = f, and weight = W) and the actors (the one feeling the force and the one causing it: Esther = E, Skateboard = S, Molly = M, the rope =R). You can ignore the sliding friction between the skateboard wheels and the floor. 11% Part (a) Given that we are viewing Esther and Molly so that Esther is pulling the rope and moving to the left, in which direction do the following forces point? Use the compass rose at the right to specify directions or choose "0" if the force is zero. fsM 11% Part (b) TRS A 11% Part (c) fs 11% Part (d) Ns A 11% Part (e) While Esther is speeding up, what is the direction of the net force that is acting on the skateboard? 11% Part (f) While Esther is running at a constant speed, what is the direction of the net force that is acting on the skateboard? A 11% Part (g) Molly weighs 20 lbs, the skateboard weighs 3 lbs, and Esther gets the skateboard up to a speed of 2 m/s after a time of 3 s and keeps running for another 3 s. Do you have enough information to figure out the force that Esther exerts between 0 and t? Between t and t? If you don't explain what additional information you need. 11% Part (h) If your answer was yes, calculate the force that Esther exerts between 0 and t in newtons. 11% Part (i) If your answer was yes, calculate the force that Esther exerts between t and t in newtons (give 3 significant figures). Fo = || N sin() cos() tan() cotan() asin() acos() B K 37 37 37 J 37 37 37 37 37 E H Grade Summary Deductions Potential 0% 100% () 7 8 9 HOME 5 6 E^^4 * 12 3 - 0 . END Submissions Attempts remaining: (2% per attempt) detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians + O BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback.
Expert Answer:
Related Book For
Introduction To Materials Management
ISBN: 978-9386873248
8th edition
Authors: Arnold J. R. Tony, Gatewood Ann K., M. Clive Lloyd N. Chapman Stephen
Posted Date:
Students also viewed these physics questions
-
In a ferrous alloy, the plastic work (yp) needed to propagate a crack in a ductile metal is 1000 J/m while the surface energy (ys) is ~1 J/m? Imagine this alloy is cooled to cryogenic temperatures so...
-
Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...
-
Angela Monterey has a five-year car loan for a Jeep Wrangler at an annual interest rate of 6.7% and a monthly payment of $609.50. After 3 years, Angela decides to buy a new car. What is Angela's loan...
-
Encode the following sentences in ASCII using one byte per character. a. Does 100 / 5 = 20? b. The total cost is $7.25.
-
Find the values of sin θ, cos θ, and tan θ for the angles corresponding to the eight points in Figure 23(A) and (B). (0.3965, 0.918) (0.3965, 0.918) FIGURE 23
-
When to file a motion to strike?
-
Denton Corporation employs 50 workers in its plant. Each employee is paid $10 per hour and works seven hours per day, Monday through Friday. Employees are paid every Friday. The last payday was...
-
The KLM Corporation reported the following information regarding its defined benefits pension plan for 2020: 1/1/2022 actuarial gain resulting from excess of actual return over expected...
-
If f(x) = f'(x) = x - 3 x +3 3x (x + 3) f'(3) = 33 (3+3) find:
-
27. A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by means of insulating handles :- (1) the charge on the...
-
1. What are some of the constraints to hospital revenue? How would knowing these constraints help inform overall operations of the hospital? 2. What are three key financial statements that business...
-
Noor Halim, CEO of CinePalace Cinemas, felt she was at a crossroads in 2022. CinePalace was a chain of 12 movie theatres in rural Saskatchewan and Manitoba towns like Moose Jaw, Swift Current,...
-
City X has recently conducted a travel survey of its 10 TAZS in 2013. The collected data are summarized in the following Table. Zone # 123456789 10 Observed Trips and Zonal Activity Households Daily...
-
Due to issues with a current supplier, an alternate supply of finished product packaging was found. the packaging materials were quickly implemented and used. after a week of production it was...
-
A bond trader has two bonds in her portfolio; with market value 20 million and 30 million and duration 2.5 and 10 respectively. If the trader is long in the 2.5 and short in the 10, what is the...
-
Ex. (17): the vector field F = x i-zj + yz k is defined over the volume of the cuboid given by 0x a,0 y b, 0zc, enclosing the surface S. Evaluate the surface integral ff, F. ds?
-
A company wants to produce 480 units over the next three months at a uniform rate. The months have 19, 20, and 21 working days, respectively. On the average, how much should the company produce each...
-
What are an order qualifier and an order winner?
-
Over the past three months, the demand for a product has been 255, 219, and 231. Calculate the three-month moving average forecast for month 4. If the actual demand in month 4 is 228, calculate the...
-
What did the management of Equity Funding Corporation do to falsify its records and cover up the fraud?
-
In the Report of the National Commission on Fraudulent Financial Reporting there were four major recommendations that directly affect the role of the auditor. What were these recommendations?
-
What is the differerfce between errors and irregularities?
Study smarter with the SolutionInn App