Question

A $0.5kg$ mass is rotated in a horizontal circle of radius $20cm$. Calculate the centripetal acceleration if the angular velocity is $0.6rad/s$. (in $m/s^2$)

• A. $0.072$
  
• B. $0.025$
  
• C. $0.0369$
  
• D. $0.032$
  

Answer 1

Answer: (A)

$0.072$

Mass $m=0.5kg$

Radius of circle $r=\frac{20}{100}m$

Angular velocity $w=0.6rad/s$

Centripetal acceleration $a_c={\omega }^{2}r$

$\Rightarrow a_c={\omega }^{2}r=$$(0.6{)}^2\frac{20}{100}=0.072m/s^2$