A)Give the (likely)value of the force of limiting friction.
B) why does the box stay at rest in the cases corresponding to fig.(a)and fig.(b)
Dear student,
A) Maximum force that is applied to an object in contact with surface or another object, before which it just starts to slide is termed as limiting friction. As in this question, in figure c) box just begin to slide when force applied is 3F. Hence, its limiting friction is 3F.
B) An object in rest does not move or slide unless the force applied on it is more than limiting friction. As in figures a and b, the applied force is less than limiting friction, ie, 3F, therefore the box remains at rest.
A) Maximum force that is applied to an object in contact with surface or another object, before which it just starts to slide is termed as limiting friction. As in this question, in figure c) box just begin to slide when force applied is 3F. Hence, its limiting friction is 3F.
B) An object in rest does not move or slide unless the force applied on it is more than limiting friction. As in figures a and b, the applied force is less than limiting friction, ie, 3F, therefore the box remains at rest.
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