A blender blades rotate with an angular velocity of 375 rad/s when the button is

Question

A blender blades rotate with an angular velocity of 375 rad/s when the button is pressed puree. When the button mixture (" blend") is pressed blades accelerate and reach another angular velocity to rotate 44 radians. The angular acceleration has a constant value of 1740 rad/s2. Determine the new angular velocity of the blades. The blades of a helicopter begin to move from rest with a constant angular acceleration and reach an operating speed of 6.50 rev/s in 5.00 s. If each blade measures 3.00 m determined by the operational speed and tangential tangential acceleration at the midpoint of the blade. The Achilles tendon exerts a force of 720 N on the heel. If the line crossing the ankle tendon with an angle of 55 degree with respect to the horizontal. determine the magnitude of the torque on the ankle. A box of 425 kg which is connected a cable UN is raised con un The motor rotates a pulley moment of inertia I = 50.0 Kgm2. If the cable tension is T = 2150 N determine the angular acceleration of the pulley. A satellite distance apogee (farthest from Earth) of 1.30 times 107 m orbital speed increases by a factor of 1.20 when it is at its closest point (perigee). Halle perigee distance using the concept of angular momentum. Una persona gira sobre una plataforma con los brazos extendidos con una rapidez angular de 5.00 rad/s y su momento de inercia es de 5.4 kg m2. Determine su rapidez angular si baja los brazos y su momento de inercia se reduce a 3.8 kg m2. The wing of a plane was designed so that air speed on the upper wing area was 248 m/s and the bottom of the wing. 225 m/s. Determine the lifting force if the wing area is 20 m2. Air density is 1.29 kg m3. In a block spring system oscillation frequency it is 2.00 Hz. If the oscillation amplitude is 0.300 m, determine the position, velocity and acceleration at t 0.500 s. A wave has an offset (in meters) = (0.45) sin (pi x 8 pi t +) where t is expressed in seconds and x in meters. Determine the amplitude, frequency. wavelength and wave. Two trucks traveling as fast approaching face to face. A driver hears the horn of another truck at a frequency which is 1.20 times listening when both trucks are stopped. Determine the speed of each truck.

Explanation / Answer

1)
= 375 rad/s
= 44 rad
= 1740 rad/s^2
Let the new angular velocity of blades be f.
f^2 = ^2 + 2**
f^2 = 375^2 + 2*1740 * 44
f =  542 rad/s

(2)
= 0
f = (6.5*2*) = 40.84 rad/s
t = 5.0 s
f = o + *t
40.84 = 0 + *5.0
= 8.17 rad/s^2

Tangential acceleration at midpoint of the blade is at, r *
at = 3/2 * 8.17 m/s^2
at =  12.26 m/s^2

please post seperate questions in separate post only !!

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