Three Boxes Are Pulled Along a Horizontal Frictionless Floor by a Constant

question 22

Multiple Choice

Three boxes are pulled along a horizontal frictionless floor by a constant horizontal pull P . The boxes are connected by very light horizontal strings having tensions as shown in the figure. Which of the following statements about the tensions is correct? (There could be more than one correct choice.)

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Definitions:

Productivity

The measure of the efficiency of a person, machine, factory, system, etc., in converting inputs into useful outputs.

Average Product

The output per unit of input, such as labor or capital, calculated by dividing total output by the total quantity of the input.

Marginal Product

The additional output produced as a result of using one more unit of a particular input, holding all other inputs constant.

Capital/Labor Ratio

The capital/labor ratio is a measure used in economics to indicate the amount of capital relative to the quantity of labor used in the production process.