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...
-
Classify each of the following instructions (in the machine language of Appendix C) in terms of whether its execution changes the contents of the memory cell at location 3B, retrieves the contents of...
-
Suppose you are designing a system for buying and selling stocks using a continuous limit order book strategy, as described in the beginning of this chapter. Describe how to use priority queues to...
-
Robert Carr is the founder of Heartland Payment Systems, Inc. Carr was heavily involved in negotiations with Global Payments, Inc., concerning the acquisition of Heartland by Global. During this...
-
Comprehensive Problem; Second Production DepartmentWeighted-Average Method Old Country Links Inc. produces sausages in three production departmentsMixing, Casing and Curing, and Packaging. In the...
-
= 5. Find the path delay D of the logic chain shown below. Assume Cout 15C, and the numbers on the gate indicates the input capacitance Cin- In 5C 5C (2-points) 3C 4C 5C 4C Out Cout
-
In a Lebanese store, the seller will let you choose between 2 payment options. Option 1: to pay your total in Lebanese Lira at the dollar rate of 18000. Option 2: to pay part of your total in fresh...
-
The consensus sequence for Hpa II is 4 basepairs, while the consensus sequence for BsaBI is 12 basepairs. How frequently would each enzyme consensus site be predicted to be present in the human...
-
Reflect further on the group you examined in the previous reflective exercise and answer the following questions. To what extent do you consider the group an effective one in terms of the two sets of...
-
In the video, explain Marten's critical takeaways about how an organization can best learn. https://youtu.be/3d9SjWuqa-s?si=gNmJNBnqTFNEqc7h Discuss any change experience you've had and how it may...
-
Part of developing a message is considering the audience that will receive your message. Discuss who the audience is, the size and demographic of the members, their stakes in your problem and...
-
Q. How did men and women acquire their communication styles? Aren't we just born that way; did we learn it? Is it nature or nurture? Q. Is non-verbal Communication...
-
"It has been said that an increased number of physicians is related to an increase in the utilization of health care services - a concept known as physician-induced demand. In your opinion, is the...
-
Currently, there are five concepts of food stands, including: hot dogs, soft pretzels, turkey legs, sandwich wraps, and funnel cakes. This approach will double the existing number of food stands...
-
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...
-
Consider the ray shown bouncing off the bottom of the surface in the preceding problem. Replace the surface at this point by the more highly-curved surface shown in dotted lines. The ray still...
-
When bouncing off a flat mirror, a light ray travels by a minimum time path. (a) For what shape mirror would the paths of all bouncing light-rays take equal times? (b) Is there a shape for which a...
-
We seek to find the path \(y(x)\) that minimizes the integral \(I=\int f\left(x, y, y^{\prime}ight) d x\). Find Euler's equation for \(y(x)\) for each of the following integrands \(f\), and then find...
Study smarter with the SolutionInn App