Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 6 (Q.No. 5)

Engineering Mechanics

A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

downward at its upper end

upward at its upper end

zero at its upper end

perpendicular to the wall at its upper end

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

12 comments Page 1 of 2.

LUCKY said: 1 decade ago

Friction will be always at slipping point of ladder means a horizontal surface. At wall there will be reaction Force Not Friction so.

Haseen said: 1 decade ago

Wall is smooth given in the question so no friction.

Lalit Swami said: 1 decade ago

Because the wall is smooth.

Sumi said: 7 years ago

I think the correct answer is B.

Uttu don said: 7 years ago

Option B is correct.

Ashish said: 7 years ago

There is no normal reaction at an upper end.

Omid said: 6 years ago

Why B is correct. The upper end is smooth so no friction. The given answer is right.

Mamdud said: 5 years ago

Friction can be less but not zero.

(1)

Ravindra vishwakarma said: 5 years ago

If any ladder is inclined against roughwall then friction act in both upward of vertical wall as well as towards it.

(1)

Vinod kumar said: 4 years ago

Agree, C is the right answer.

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