Class Management | Help Week9 Begin Date: 7/27/2023 12:01:00 AM -- Due Date: 8/8/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (5%) Problem 1: During the spin cycle the time dependent angular speed of a washing machine drum is given by the equation o(t) = at + be - or where a = 2.9 rad/s2, b = 0.25 rad/s' and c = 0.045 rad/s'. At time = 0 s, a point P on the washer drum is located at 80 = 2.2 rad. 25% Part (a) Write an equation for the angular acceleration of the drum, as a function of time, in terms of the given parameters. a (1 ) = 1 Grade Summary Deductions Potential 100% B P ( 7 8 9 Submissions a b C 4 5 6 Attempts remaining: 999 d g 1 2 3 (0% per attempt) detailed view k m + - 0 P I Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback A 25% Part (b) What is the angular acceleration, in radians per square second, at time ? = 3.3 s? A 25% Part (c) Write an equation for the angular position of the point P. as a function of time, in terms of the given parameters. A 25% Part (d) What is the angular position of the point P on the drum, in radians, at r = 3.3 s?Class Management | Help Week9 Begin Date: 7/27/2023 12:01:00 AM -- Due Date: 8/8/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (5%) Problem 2: A stone with mass m = 4 g at the end of a massless string is swinging in a circle of radius R = 1.48 m with and angular velocity @ = 13 rad/s. R Ctheexpertta.com A 25% Part (a) Write an expression for the velocity v of the stone. Grade Summary 1 = Deductions 0% Potential 100% a B ( 7 8 9 Submissions a d 4 5 6 Attempts remaining: 999 (0% per attempt g h 1 2 3 detailed view m P + -0 R V VO Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. A 25% Part (b) Calculate the velocity of the stone, v in m/s. 4 25% Part (c) In order to travel in a circle, the direction the stones path must constantly be changing (curving inward). This constant change in direction towards the center of the circle is a center pointing acceleration called centripetal acceleration a . Write an expression for the centripetal acceleration a of the stone, in terms of the linear velocity. 4 25% Part (d) Calculate the centripetal acceleration of the stone, a, in m/s-.Class Management | Help Week9 Begin Date: 7/27/2023 12:01:00 AM -- Due Date: 8/8/2023 11:59:00 PM End Date: 8/10/2023 11:59:00 PM (5%) Problem 3: The angular velocity of an object as it rotates about a fixed axis is represented by the straight line on the graph of angular velocity versus time that is shown here. c (rad/s) 500 400 300 200 100 0 - 1 (s) 8 9 10 4 50% Part (a) In radians per squared second, what is the angular acceleration? rad/s Grade Summary Deductions 6% Potential 100% sin() COS( tan() 7 8 9 Submissions cotan() asin( acos() E 4 5 6 Attempts remaining: 999 atan() (0% per attempt) acotan() sinh() 2 3 detailed view cosh( tanh( cotanh() + - 0 Degrees O Radians NO Submit Hint I give up! Hints: 09% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback 4 50% Part (b) What is the angular displacement, in radians, between t = 0.0 s and t = 7.1 s