Question

A 500kg horse pulls a caw of mass 1500kg along a level road with an acceleration of $1m/s^2$. If the coefficient of sliding friction is 0.2 then the horizontal force exerted by the earth on the horse is

• A. 300 kg-wt
• B. 400 kg-wt
• C. 500 kg-wt
• D. 600 kg-wt

Answer 1

The correct option is D 600 kg-wt

$ForceonblockF=\mu mg+ma=0.2\times 1500g+1500\times 1=450g$

Force on horse $F=500a+\mu \times 500g=150g$

$Totalforce=150+450=600kg-wt$