Question

What is the centripetal acceleration on the rim of a wagon wheel of $44cm$ diameter if the wagon is being pulled at a constant $2.5m/s$?

• A. $10.8m/s$
• B. $18.6m/s$
• C. $28.4m/s$
• D. $32.7m/s$
• E. $36.3m/s$

Answer 1

The correct option is C $28.4m/s$

Given- diameter , $d=44cm=0.44m$ or radius $r=0.44/2=0.22m$ ,

$v=2.5m/s$

centripetal acceleration is given by ,

$a=v^2/r$

$a={2.5}^2/0.22=28.4m/s^2$