Question

A small child tries to move a large rubber toy placed on ground. The toy does not move but gets deformed under her pushing force $\overrightarrow{F}$ which is obliquely upwards as shown. Then choose wrong statements

• A. The resultant of pushing force $\overrightarrow{F},$ weight of the toy, normal by ground on toy and friction force is zero
• B. The normal force by ground is equal and opposite to the weight of the toy
• C. The pushing force $\overrightarrow{F}$ of child is balanced by the equal and opposite frictional force
• D. The pushing force $\overrightarrow{F}$ of child is balanced by the total internal force in the toy generated due to deformation

Answer 1

Answer: (B), (C), (D)

The pushing force $\overrightarrow{F}$ of child is balanced by the total internal force in the toy generated due to deformation

By force equilibria on the toy,

$\overrightarrow{F}+\overrightarrow{N}+\overrightarrow{Mg}+\overrightarrow{f}=0$
$Mg=F_y+N$
$f=F_x$