(6%) Problem 4: You have a horizontal grindstone (a disk) that is 88 kg, has a 0.35 m radius, is turning at 94 rpm (in the positive direction), and you press a steel axe against the edge with a force of 22 N in the radial direction. F - @theexpertta.com - tracking id 1 accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. Otheexpertta.com *50% Part (a) Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone in rad/s . Grade Summary a = Deductions 30% Potential 70% sin() cos( tan( 1 7 8 9 HOME Submissions cotan( asin( acos() E 4 5 6 Attempts remaining: 6 (5% per attempt) atan( acotan( sinh() 1 2 3 detailed view cosh() tanh() cotanh() U END 1 5% O Degrees O Radians NO BACKSPACE DEL CLEAR 5% 5% A 5% Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 3 Feedback: 2% deduction per feedback. 4 50% Part (b) What is the number of turns, N, that the stone will make before coming to rest?(6%} Problem 6: The planet Earth orbits around the Sun. and also spins on its own axis. $3 33 \"/0 Part (3} Calculate the angular momentum= in kilogram meters squared per second= of the Earth in its orbit around the Sun. Lotti = [I kg - [:1sz Hints: deduction per hint. Hints remaining: _ Degrees 'Lii' Radians Submit Hint I I gi't'e up! Iee dback: deduction per feedback. Grad e Sum ma r_\\' Deductions Potential 95% Submissions Attempts remaining: _ c per attempt) detailed View 1 33 \"Eb Part (1)) Calculate the angular momentum in kilogram me 33 \"Eb Part (c) How many times larger is the angular momentum of the I ers squared per second= of the Earth spining on its axis. Earth in its orbit than the angular momentum of the Earth spinning on its axis? (6%) Problem 7: Three children are riding on the edge of a merry-go-round that is a disk of mass 110 kg, radius 1.4 m, and is spinning at 23 rpm. The children have masses of 24 kg, 27.2 kg, and 34.6 kg. Randomized Variables M= 110 kg my = 24 kg my = 27.2 kg ma =34.6 kg r = 1.4 m f= 23 rpm @theexpertta.com - tracking in In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. * If the child who has a mass of 27.2 kg moves to the center of the merry-go-round, what is the new magnitude of angular velocity in rpm? Grade Summary f Deductions 5% Potential 95% sin() cosC tan( 7 8 9 HOME Submissions cotan() asin acos() E TA 4 5 Attempts remaining: 11 (5% per attempt) atan( acotan( sinh() 1 2 3 detailed view coshQ tanho cotanh() END 1 5% O Degrees O Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback.6%) Problem 3: Modern wind turbines generate electricity from wind power. The large, massive blades have a large moment of inertia and carry a great amount of angular momentum when rotating. A wind turbine has a total of 3 blades. Each blade has a mass of m = 5500 kg distributed uniformly along its length and extends a listance y = 42 m from the center of rotation. The turbine rotates with a frequency of f= 13 rpm. Jijakli, Afnan - axj2730@mavs.uta.edu @theexpertta.com - tracking id: 5188-75-0E-46-BB99-46088. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing o may result in termination of your Expert TA Account. 4 25% Part (a) Enter an expression for the total moment of inertia of the wind turbine about its axis of rotation, in terms of the defined quantities. Grade Summary 1= Deductions 0% Potential 100% a 7 8 9 HOME Submissions a b d 4 5 6 Attempts remaining: 12 (5% per attempt) g h 2 3 detailed view K m P + END t VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback. A 25% Part (b) Calculate the total moment of inertia of the wind turbine about its axis, in units of kilogram meters squared. 4 25% Part (c) Enter an expression for the angular momentum of the wind turbine, in terms of the defined quantities. 4 25% Part (d) Calculate the angular momentum of the wind turbine, in units of kilogram meters squared per second