Spin cycle of a washing machine

Classical Mechanics Level 1

During the spin cycle of a washing machine, the clothes stick to the outer wall of the barrel as it spins at a rate as high as $1800$ revolutions per minute. The radius of the barrel is $26 \text{ cm.}$ Determine the approximate speed of the clothes (in m/s) which are located on the outer wall of the spinning barrel.

98.0 \text{ m/s}

21.0 \text{ m/s}

7.0 \text{ m/s}

49.0 \text{ m/s}

3 solutions

Mohd Naim Mohd Amin
Jun 11, 2014

Hey yo,

as v (linear) = rw = (0.26) ( 1800 x 2 pie x 1 /60 ) =~ 49.0 m/s....

Umang Vasani
Jun 9, 2014

Converting angular velocity from rpm to $rads^{-1}$ we get $\omega = 188.57$ . Now $v = \omega * r$ .

Balagopal Indiradevi
Jun 4, 2014

velocity is simply angular velocity times the radius. angular velocity is obtained from rpm.