A 2 kg brick begins to slide over a surface which is inclined at an angle of 45° with respect to horizontal axis.
The co-efficient of static friction between their surfaces is [2024]
1
0.5
1.7
(A) Slipping starts when, ( is angle of respose)
Given below are two statements:
Statement (I): The limiting force of static friction depends on the area of contact and independent of materials.
Statement (II): The limiting force of kinetic friction is independent of the area of contact and depends on materials.
In the light of the above statements, choose the most appropriate answer from the given below: [2024]
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are incorrect
Both Statement I and Statement Il are correct
(B) Co-efficient of friction depends on surface in contact So, it depends on material of object.
