In the figure, a solid 0.4 kg ball rolls smoothly from rest (starting at height H = 6.1 m) until it leaves the horizontal section at the end of the track, at height h = 1.9 m. How far horizontally from point A does the ball hit the floor? Number i ! A Units 3
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- The center O of the wheel is mounted on the sliding block, which has an acceleration ao = 7.1 m/s² to the right. At the instant when 0 = 39°, 0 = 3.3 rad/s and 0 = -6.7 rad/s². For this instant determine the magnitudes of the accelerations of points A and B. 8 Answers: aA = ав A i i 340. mm B ao m/s² m/s²A circular track has several concentric rings where people can run at their leisure. Phil runs on the outermost track with radius rP while Annie runs on an inner track with radius rA = 0.70 rP. The runners start side by side, along a radial line, and run at the same speed in a counterclockwise direction. How many revolutions has Annie made when Annie's and Phil's velocity vectors point in opposite directions for the first time?In the figure below, a solid ball rolls smoothly from rest (starting at height H = 8.3 m) until it leaves the horizontal section at the end of the track, at height h = 2.3 m. How far horizontally from point A does the ball hit the floor?
- A centrifuge accelerates uniformly from rest to 13000 rpm in 180 s. A. Through how many revolutions did it turn in this time?A model of a helicopter rotor has four blades, each of length 3.4 mm from the central shaft to the blade tip. The model is rotated in a wind tunnel at a rotational speed of 500 rev/minrev/min. 1. What is the linear speed of the blade tip? Express your answer in meters per second. 2. What is the radial acceleration of the blade tip expressed as a multiple of the acceleration due to gravity, gg? Express your answer as a multiple of gg. 3.In the figure, a solid 0.1 kg ball rolls smoothly from rest (starting at height H = 6.3 m) until it leaves the horizontal section at the end of the track, at height h = 2.0 m. How far horizontally from point A does the ball hit the floor? Number Units
- = (e) In the figure below, a solid ball rolls smoothly from rest (starting at height H 6.0 m) until it leaves the horizontal section at the end of the track, at height h = 2.0 m. How far horizontally from point A does the ball hit the floor? HPls help ASAPAn electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.200 rev/s. The magnitude of the angular acceleration is 0.881 rev/s². Both the the angular velocity and angular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.800 m. Part E Calculate the magnitude ar of the radial (or centripetal) acceleration of the point at the end of the fan blade. ▾ View Available Hint(s) Hint 1. Definition of radial acceleration Radial acceleration ar for an object moving with tangential velocity vt in a circular path of radius r is given by Ap = v²/ pº V ΑΣΦ ar = 0.96 *** Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Review | Constan ? m/s²
- Question 4. A single bead can slide without friction on a vertical hoop of radius r. The hoop rotates about its vertical axis and makes one complete revolution in T seconds. The position of the bead is described by the angle 0. At what 0 > 0 can the bead stay stationary while the hoop rotates? rA wheel is spinning at 50 rpm with its axis vertical. After 15 s, it's spinning at 67 rpm with its axis horizontal. ▼ Part A Find the magnitude of its average angular acceleration. Express your answer in radians per second squared. α= Submit Part B for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A 0 = Find the angle the average angular acceleration vector makes with the horizontal. Express your answer in degrees. Request Answer for Part B for Part B undo for Part B redo for Part B reset for Part B keyboard shortcuts for Part B help for Part B Submit Request Answer rad/s²Suppose a fast-pitch softball player does a windmill pitch, moving her hand through a circular arc with her arm straight. She releases the ball at a speed of 30.9 m/s (about 69.1 mph). Just before the ball leaves her hand, the ball's radial acceleration is 331 m/s?. What is the length of her arm from the pivot point at her shoulder? m length: