Archive
16th of September 2015
Physics
Q:

A particle moves over three quarters of a circle of radius r. What is the distance travelled by it?

Sayani Roy - CBSE - Class IX

Wednesday, September 16, 2015 at 18:27:PM

A:

Hi Sayani,

Distance covered is 3/4 circumference.

So, we have

begin mathsize 12px style straight d equals 3 over 4 cross times 2 cross times straight pi cross times straight r equals fraction numerator 3 πr over denominator 2 end fraction end style

Wednesday, September 16, 2015 at 18:30:PM