A Block of Mass M Is Sliding Down a Rough $\theta$

question 61

Multiple Choice

A block of mass M is sliding down a rough inclined surface that makes an angle $\theta$ with respect to the horizontal.If the coefficient of static friction is $\mu$ _s and kinetic friction $\mu$ _k,then the acceleration of the block down the incline is equal to:

• A)gsin \(\theta\) - g \(\mu\)_s \(\times\) cos \(\theta\)
• B)gcos\(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)
• C)g \(\mu\)_s \(\times\) cos \(\theta\) - gsin \(\theta\)
• D)gsin \(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)
• E)gsin \(\theta\) - g \(\mu\)_s \(\times\) cos \(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)

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Definitions:

Fixed Role Therapy

A psychotherapeutic technique in which the client acts out constructs appropriate for a fictitious person. This shows the client how the new constructs can be more effective than the old ones he or she has been using.

Existing Constructs

Pre-established concepts or frameworks used to understand or interpret various phenomena.

Anticipating Events

The process of predicting or expecting future occurrences based on current or past information.

Role Construct Repertory

A psychological test and theory that assesses how individuals construe significant people in their lives, reflecting their personal construct systems.