Week6 Begin Date: 7/7/2023 12:01:00 AM -- Due Date: 7/18/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (4%) Problem 8: As a section of an workout regiment to build their pectoral muscles, a man stretches a spring which has a spring constant k = 545 N/m. Otheexpertta.com 4 50% Part (a) Calculate the work, in joules, required to stretch the spring from its relaxed state to the position z1 = 54.7 cm. W1 = 1 J Grade Summary Deductions 0% Potential 100% sin() cos() tan() TE ( ) 7 8 9 HOME Submissions cotan() asin() acos() 4 5 6 Attempts remaining: 999 1 2 3 (0% per attempt) atan() acotan() sinh() detailed view cosh( tanh() cotanh( 0 END Degrees O Radians VO CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback 4 50% Part (b) Calculate the work, in joules, required to stretch the spring from x1 = 54.7 cm to x2 = 75.8 cm.Week6 Begin Date: 7/7/2023 12:01:00 AM -- Due Date: 7/18/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (2%) Problem 10: Consider a ball of mass m attached to a string of length L, which is being spun around page. in a horizontal circle as shown in the figure. This image is shown from above, so gravity is acting into the L theexpertta. How much work is the string doing on the ball, if it moves with a constant speed v? W = 1 Grade Summary Deductions Potential B 1 () 7 8 9 HOME Submissions a d 4 5 6 Attempts remaining: (0% per attempt) g h j 1 2 3 detailed view K L m 0 END P V VO CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedbackWeek6 Begin Date: 7/7/2023 12:01:00 AM -- Due Date: 7/18/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (4%) Problem 11: The graph shows the r component of a force that acts on an object that moves on the ar axis. The vertical spacing between adjacent grid lines is 5.88 N, while the horizontal spacing between adjacent grid lines is 1.0 m. F (N) .x (m) What is the work, in joules, done by the force as the object moves from z = 0 m tor = 8 m? W = 1 Grade Summary Deductions 0% Potential 100% sino cos() tan() 71 ( ) 7 8 9 HOME Submissions cotan() asin( acos() E 4 5 6 Attempts remaining. 999 (0% per attempt) atan() acotan() sinh( 1 2 3 detailed view cosh() tanh() cotanh() 0 END Degrees O Radians Vol CLEAR Submit Hint I give up! Hints: 09% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedbackWeek6 Begin Date: 7/7/2023 12:01:00 AM -- Due Date: 7/18/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (8%) Problem 13: The person in the diagram pushes a lawn mower a distance d, applying a constant force of magnitude F that makes an angle 0 with the displacement, which is horizontal. A constant frictional force of magnitude facts opposite in direction to the displacement. The only other forces on the lawn mower are gravity and the normal force. d 4 25% Part (a) Which of the forces do zero work on the lawn mower? Check all that apply. Gravity O Friction The applied force Grade Summary Deductions 0% The normal force Potential 100% Submissions Attempts remaining: 999 (0% per attempt) detailed view Submit Hint Feedback I give up ! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback 4 25% Part (b) Write an expression for the work WF done by the applied force in terms of F, d, and 0. 25% Part (c) Write an expression for the work W done by the frictional force in terms of fand d. 4 25% Part (d) Under what condition will the kinetic energy of the lawn mower increase?Week6 Begin Date: 7/7/2023 12:01:00 AM -- Due Date: 7/18/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (5%) Problem 14: A block of mass m is initially at rest at the top of an inclined plane which has a height of 4.33 m and has an angle of 0 = 18.20 with respect to the horizontal. After being released, it is observed to be traveling at v - 0.89 m/s a distance d after the end of the inclined plane, as shown. The coefficient of kinetic friction between the block and the plane is up = 0.1, and the coefficient of friction on the horizontal surface is , = 0.2. m U m A Find the distance, d, in meters. d = m Grade Summary Deductions 0% Potential 100% sin( cos() tan() It ( ) 7 8 9 HOME Submissions cotan() asin() acos() E 4 5 6 Attempts remaining: 999 (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosh( tanh() cotanh() 0 END O Degrees O Radians VO CLEAR Submit Hint Feedback I give up ! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback