Question

(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)?
-) Mark the direction of frictional force, and mention the kind of frictional
force that comes into play, in each case.​

Answer 1

Answer:

a) Value of limiting friction is the that amount of force which we need to just start a body to move.

b) answer in the attachment ☝️☝️

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Answer 2

Explanation:

Question no. a

Answer = A force applied to the two surfaces exceeds the limiting friction, motion will occur. for two dry surface the, limiting friction is a product of the normal reaction force and coefficient of limiting friction .

Question no b

Ans= An object in rest does you not to move or slide unless the first Applied on it is more than limiting force. As in figure a&b, the applied force is less than limiting friction, I. e, 3F. therefore the box the remains at rest .

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