The blades of a fan running at low speed turn at 270 rpm. When the fan is switched to high speed, the rotation rate increases uniformly to 440 rpm in 5.95 s. What is the magnitude of the angular acceleration of the blades?

The angular acceleration of the blades is .                                

Explanation:

Given that,

Initial angular velocity of the blade of fan,

Final angular velocity of the blade of a fan,

Time, t = 5.95 s

The angular acceleration of the blades is equal to the rate of change of its angular velocity. It is given by :

So, the magnitude of the angular acceleration of the blades is .

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//