Sebastian Has Drawn a Free-Body Diagram for a Ladder of Mass

question 17

Multiple Choice

Sebastian has drawn a free-body diagram for a ladder of mass m leaning against a frictionless wall.His diagram is shown below.What is his error?

• A) is in the wrong direction.
• B) should be directed upwards,not down.
• C) should be perpendicular to the wall,not parallel to it.
• D) should be down into the floor for to have the given direction.
• E) is correct,but there should also be a force perpendicular to the wall.

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