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Q.

A small child tries to move a large rubber toy placed on the ground. The toy does not move but gets deformed under her pushing force  which is (F) obliquely upward as shown. Then 

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a

The resultant of the pushing force (F) , weight of the toy, normal force by the ground on the toy and the frictional force is zero.

b

The normal force by the ground is equal and opposite to the weight of the toy

c

The pushing force (F) of the child is balanced by the equal and opposite frictional force

d

The pushing force (F) of the child is balanced by the total internal force in the toy generated due to deformation

answer is A.

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Detailed Solution

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from fig we can conclude that the resultant of the pushing force (F), weight of the toy, normal force by the ground on the toy and frictional force is zero.

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