Two Blocks Rest on a Horizontal Frictionless Surface as Shown

question 67

Multiple Choice

Two blocks rest on a horizontal frictionless surface as shown. The surface between the top and bottom blocks is roughened so that there is no slipping between the two blocks. A 30-N force is applied to the bottom block as suggested in the figure.
-What is the force of static friction between the top and bottom blocks?

• A)zero newtons
• B)10 N
• C)20 N
• D)25 N
• E)30 N

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Definitions:

Reality

The state of things as they actually exist, as opposed to an idealistic or notional idea of them.

Defense Mechanism

Psychological strategies used unconsciously to protect oneself from anxiety or stress by denying or distorting reality.

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A defense mechanism where an individual attributes their own unacceptable thoughts, feelings, or motives to another person.

Divorced

The state of being legally dissolved from a marriage.