Question

3. circomference of a circular path is 3/4 m.
AB is its dimeter A cycligt starting his
motion from a rearches B.along the
circular path. calcutate distance travelled
by him and also find his displacement
(\pi= 3.14)​

Answer 1

Answer:

Given,

Circumference of circular track=2πr=3140m where r=radius of circle

Now according to question,Scooter moves from A to B along the circular path (where AB is diameter).

It means scooter completes half a revolution(circumference/2).

So,Distance travelled=The actual path traversed by scooter=23140=1570 m

Again,Displacement=The shortest distance travelled by scooter(Final position−Initial position)

=Diameter of the circle=2r

Since 2πr=3140m (hereπ=3.14)

2r=3.143140=1000 m.

To calculate the time taken by the scooter in reaching from A to B,we have a formula

Speed=TimeDistance

Time=SpeedDistance=101570=157 seconds.