A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.6 µm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a constant speed of 1.35 m/s. (a) Find the required angular speed at the beginning of the recording where the spiral has a radius of 2.30 cm. (Enter your answer to at least one decimal place.)  rad/s (b) Find the required angular speed at the end of the recording, where the spiral has a radius of 5.25 cm. (Enter your answer to at least one decimal place.)  rad/s (c) A full-length recording lasts for 72 min, 33 s. Find the average angular acceleration of the disc.  rad/s2

One popular design of a household juice machine is a conical, perforated stainless steel basket 3.30 cm high with a closed bottom of diameter 8.00 cm and open top of diameter 13.40 cm that spins at 23000 revolutions per minute about a vertical axis. Solid pieces of fruit are chopped into granules by cutters at the bottom of the spinning cone. Then the fruit granules rapidly make their way to the sloping surface where the juice is extracted to the outside of the cone through the mesh perforations. The dry pulp spirals upward along the slope to be ejected from the top of the cone. The juice is collected in an enclosure immediately surrounding the sloped surface of the cone. Pulp D Motor Spinning basket Juice spout (a) What centripetal acceleration does a bit of fruit experience when it is spinning with the basket at a point midway between the top and bottom? m/s² ---Direction--- (b) Observe that the weight of the fruit is a negligible force. What is the normal force on 1.50 g of fruit at…

A catapult of length, 0.6 m, starts at rest (shown left) and undergoes a constant acceleration for 0.15 seconds through an angle of 0.7 radians (shown right). After rotating 0.7 radians, the catapult stops moving, at which point the ball separates from the catapult. The ball flies through the air and eventually lands on level ground (though not at its starting height). If the ball hits the ground after 3 seconds, what is the y component of the velocity just before the ball hits the ground (where positive y is up into the sky)? Air resistance can be neglected. To solve this problem we will break it into 2 parts. The first piece will be a rotational evaluation of the catapult swing. The second piece will be the parabolic motion of our launched ball (which has now separated from the catapult). Length Angle Enter your numerical answer in units of m/s to 3 sig figs: Length

The rod O A rotates clockwise with a constant angular velocity of 6 rad/s. Two pin- connected slider blocks, located at B, move freely on OA and the curved rod whose shape is a limacon described by the equation r = 200(2 - cos ) mm. (Figure 1) Figure B 600 mm 6 rad/s 400 mm 200 mm 1 of 1 Part A Determine the speed of the slider blocks at the instant 0 = 145°. Express your answer to three significant figures and include the appropriate units. V = Value Submit μA Provide Feedback Request Answer Units ? Next >