Physics 20: SUMMER Assignment 6 /36 Assignment 6 Unit B Module 1, Lesson 4: Free-Body Diagrams and Net Force Lesson 1 of this assignment is worth 9 marks. The value of each question is noted in the left margin in parentheses. Remember: all net force problems should include a free-body diagram. 1. Beta convinces Alpha to drag their ice-fishing shack to a new location by pulling it with ropes. Alpha applies a force of 150 N [175"] on one rope and Beta applies a force of 175 N [190*] on another rope. What is the net force applied to the shack by Alpha and Beta? Assume the ice is frictionless. Show all work. (6)2 Physics 20: SUMMER Assignment 6 2. The next day, Alpha decides to move the shack back to its original location. Alpha (having had a nutritious breakfast) is able to pull the 1800 kg shack at a constant velocity with a force of 190 N. Calculate the coefficient of friction between the shack and the ice. Show all work. (3)Unit B Module 1, Lesson 5: Solving Net Force Problems Lesson 2 of this assignment is worth 27 marks. The value of each question is noted in the left margin in parentheses. Remember: all net force problems should include a free-body diagram and specify positive and negative directions. . 3. A textbook with a mass of 2.18 kg is pulled across a table with a horizontal force of 5.5 N [E]. If the table has a coefficient of friction of 0.15, what is the acceleration of the textbook? (2)Physics 20: SUMMER Assignment 6 4. Use the following information to answer parts a and b. A 10.0 kg toboggan slides down a frictionless icy hill with a slope of 25.0'. a) Calculate the parallel component of the toboggan's weight. (2) b) Calculate the acceleration of the toboggan. (1)