Blades of an airplaneâs engine rotate with an initial speed is 40 rev/min. assuming constant angular acceleration of magnitude 8 rad/s^2 . (a) how long does it take for the blades to reach the angular speed ïf = 120 rev/ min?
(b)through how many radians does a blade turn during the time found in (a).
note : write down the detail process

Part a)

t = 1.05 s

Part b)

Explanation:

Initial angular speed is given as

angular acceleration is given as

now we have

part a)

final angular speed = 120 rev/min

now by kinematics we have

Part b)

Angle turned by the blades is given by

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever