Question

What will happen if we will increase the radius of the pedal gear (R3)?
•Ride the bicycle with lesser effort .
•Ride the bicycle with more effort .
•Nothing will change .​

Answer 1

Ride the bicycle with lesser effort.

Explain: from linear acceleration

a = FpR

a is acceleration

F is force

p is pedal gear

R is the radius of the wheel

so p = a/FR

then you can see that F inverse with p ( means if p is increased, F will decrease)