A B VA VB A large wind turbine (typical of the size and specifications of a turbine that you see in a modern wind farm) has three blades connected to a central hub. The blades are 50 m long and the linear velocity of point B is 65 m/s. (a) What is the linear velocity of point A which is 35 m away from the hub. (b) what is the angular velocity of the turbine. Express your answer in revolutions per minute.

A particular DVD player has an operational angular velocity of 2500 rpm. We model thespinning DVD as a disk (I = 0.5 mr^2) with radius r = 0.1m, m = 40 g. A) What is the centripetal acceleration of a point on the edge of the DVD when it is spinningat operational speed? What is the tangential velocity of this point?   B) We turn off the DVD player and notice it takes 3 seconds for the DVD to stop spinningdue to kinetic friction. What is the angular acceleration of the DVD? How many rotations does theDVD make before it stops?   C) If we model the total kinetic friction force acting on the DVD as acting on a point r = 0.05m from the center of the disk, pointing in the direction opposite of the motion at this point, then whatis the coefficient of kinetic friction between the disk and the disk tray?

page A person 1.56 m tall swings their leg from the hip at 1.51 radians/s. Calculate the linear tangential velocity (v) at their knee to 2 decimal places. Answer. re to search 561 R T 6 B N U 8 O Pa Next page d Construction on A20...

A three-blade wind turbine, which spins perpendicularly to the ground, is set on a pole that is 38 m tall and completes 5 revolutions in one minute. The length of one blade is approximately 4 m long. One particular blade lies parallel to the ground before the turbine started to spin. b) What is the height of the tip of the blade after one second from start?