A Uniform, Horizontal Beam of Length 6 $\degree$ With the Horizontal

question 76

Multiple Choice

A uniform, horizontal beam of length 6.0 m and weight 140 N is attached at one end to a wall by a pin connection (so that it may rotate) . A cable attached to the wall above the pin supports the opposite end. The cable makes an angle of 60 $\degree$ with the horizontal. What is the tension in the cable needed to maintain the beam in equilibrium?

• A) 81 N
• B) 69 N
• C) 70 N
• D) 140 N

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Definitions:

Confidence Interval

A range of values derived from sample data that is likely to contain the true population parameter with a specified level of confidence.

Population Mean

The average value of all elements in a population.

Population Values

The actual numerical values representing a characteristic of every individual member of a population.

Confidence Level

A measure indicating the probability that a given range includes the true value of an estimated parameter.