A mass of 11.3 kg, fastened to the end of an aluminum wire with an unstretched length of 0.47 m, is whirled in a vertical circle with a constant angular speed of 121 rev/min. The cross-sectional area of the wire is 1.6x102 cm² Review Calculate the elongation of the wire when the mass is at the lowest point of the path. Express your answer using two significant figures. 195| ΑΣΦ → C ? AL= 4.0 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Calculate the elongation of the wire when the mass is at the highest point of its path. Express your answer using two significant figures. [5] ΑΣΦ ? ALE 99 m m

Assignment 11. Rotational Motion Problem 7.41 A solid cylinder with a radius of 3.0 cm has the same mass as a solid sphere of radius R. Part A R= If the sphere has the same moment of inertia about its center as the cylinder about its axis, what is the sphere's radius? Express your answer with the appropriate units. Submit 0 HÅ Value Provide Feedback Request Answer Units XXX 11 of 17 ? Review | Constants I Periodic Table Next >

I Review Constants Periodic Table (Figure 1) In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall.. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing suddenly drops away! If all goes well, the passengers will "stick" to the wall and not slide. Clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. Part A What is the minimum rotational frequency, in rpm, for which the ride is safe? Express your answer in revolutions per minute. Figure 1 of 1 • View Available Hint(s) f = rpm Submit

The cam OAB rotates with a constant counterclockwise angular velocity w. (Figure 1) Figure D Part A Determine the velocity of the follower rod CD as a function of when the contact between the cam and follower is along the straight region AB on the face of the cam. Express your answer in terms of some or all of the variables r, w and 0. ▸ View Available Hint(s) VCD= Submit Part B acd= [ΨΕΙ ΑΣΦ Submit Determine the acceleration of the follower rod CD as a function of when the contact between the cam and follower is along the straight region AB on the face of the cam. Express your answer in terms of some or all of the variables r, w and 0. ► View Available Hint(s) vec Provide Feedback ? 15. ΑΣΦ | 11 | vec ?