Coefficient of friction depends upon nature of surface only, it is independent of area of contact.
42) Coefficient of friction depends upon
Answer is:
nature of surface only
Explanation:
Related Engineering Mechanics MCQ with Answers
Answer is:
equal to
Explanation:
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane equal to the angle of friction.
Answer is:
upward at its upper end
Explanation:
A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act upward at its upper end.
Answer is:
zero at its upper end
Explanation:
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act zero at its upper end.
Answer is:
less than
Explanation:
In a screw jack, the effort required to lower the load is less than the effort required to raise the same load.
