A 100-Kg Uniform Ladder That Is 2

question 64

Multiple Choice

A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to a height of 2.10 m, as shown in the figure. The base of the ladder rests on a rough horizontal floor whose coefficient of static friction with the ladder is 0.800. An 80.0-kg bucket of concrete is suspended from the top rung of the ladder, right next to the wall, as shown in the figure. What is the magnitude of the friction force that the floor exerts on the ladder?

• A) 538 N
• B) 706 N
• C) 1290 N
• D) 833 N
• E) 601 N

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Definitions:

Muscle Origin

The fixed attachment point of a muscle to bone, acting as the anchor from which the muscle operates to produce movement.

Pelvic Girdle

Portion of the vertebrate skeleton to which the lower (hind) limbs are attached; consists of the coxal bones.

Coxal

Pertaining to the hip or hip joint, often used in the context of bone anatomy to describe the region or aspects of the pelvis.

Fontanel

Soft spots on an infant's skull where the bones have not yet fused, allowing for growth of the brain and skull.