# Answer on Mechanics | Relativity Question for brian

Question #984

In the spin cycle of a washing machine, the tub of radius 0.44 m rotates at a constant rate

of 705 rev/min. What is the maximum linear speed of the water inside the machine?

Answer in units of m/s.

of 705 rev/min. What is the maximum linear speed of the water inside the machine?

Answer in units of m/s.

Expert's answer

The highest linear speed if the water can be reached at the walls of the tub (r=0.44)

ω =2*π*705 rev/min =2*π* 11.75 rev/sec.

According to the equations of the rotational motion:

V = ω *r =2*π*11.75 * 0.44 = 32.48 m/s

ω =2*π*705 rev/min =2*π* 11.75 rev/sec.

According to the equations of the rotational motion:

V = ω *r =2*π*11.75 * 0.44 = 32.48 m/s

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