a pulley is rotating 320 times per minute though how many degrees does a point o the edge of the pulley move in 2/3 sevond

1280°

Step-by-step explanation:

The rotation of the pulley can be converted from 320 times per minute to per seconds as

320 times/360= 16/3 times per seconds

Now the rate at which the pulley is rotating in "per second"= 16/3 per seconds

To determine degrees a point on the edge of the pulley move in (2/3 seconds) then we can calculate as;

=( 16/3 per seconds × 2/3 )

=32/9 times/seconds

Which means, in 2/3 seconds, it moves with 32/9 times.

But 360° makes a rotation here, then

the degree a point on the edge of the pulley move in 2/3 seconds will be

(32/9 times× 360°)= 1280°

Hence, it moves at 1280°

i think the answer is b.

step-by-step explanation:

not 100% sure though.