When an object is at rest on the inclined rough surface _______
A. static and kinetic frictions acting on the object is zero
B. static friction is zero but kinetic friction is not zero.
C. static friction is not zero and kinetic friction is zero.
D. static and kinetic frictions are not zero.
Answer:C
When an object is at rest on the inclined rough surface _______
A. static and kinetic frictions acting on the object is zero B. static friction is zero but kinetic friction is not zero. C. static friction is not zero and kinetic friction is zero. D. static and kinetic frictions are not zero.