2014 multiple choice question 18 (1 Viewer)

[tj99]

Hey guys,

i really need help on working out this question, and there are no worked solutions on the web

Would really appreciate if someone could help

Thanks

 

[jackcrowther]

VR = dE/dL

Circumference of drive circle = π x d = π x .34m (thats pi btw)
Circumference of rear wheel = π x 0.7m


Gear ratio of wheels: for every time the front drive spins one the back wheel will spin 50/20 times or 2.5 times ( this is due to the gear ratio)


∴ VR = π x 0.34 / 2.5 x π x 0.7

= 0.194

= B