Question

A wheel of diameter 100 cm makes 0.5 rev sec!
1. The linear speed of a particle on its rim is:​

Answer 1

Answer:

I got

b

)

Explanation:

Ok,

30

rev/min correspond to

30

60

=

0.5

rev/sec or haf revolution at each second;

this corresponds to half a circle of

1

m

of diameter each second.

We can say that

1

m

diameter corresponds to a radius

r

=

1

2

=

0.5

m

.

Half a circle corresponds to an arc length of half circumference or:

1

2

C

=

1

2

⋅

2

π

r

=

π

2

m/s