A Block of Weight W Is Suspended by a String

question 93

Multiple Choice

A block of weight W is suspended by a string of fixed length. The ends of the string are held at various positions as shown in the figures below. In which case, if any, is the magnitude of the tension along the string the largest?

• A)case A
• B)case B
• C)case C
• D)case D
• E)The magnitude of the tension will be the same in all four cases, since the string must support the entire weight of the block.

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Definitions:

Random Assignment

Random assignment is a method used in experiments to assign participants or subjects to different groups in a way that is completely by chance, ensuring the groups are statistically similar in all respects at the start of the experiment.

Quasi-experimental Design

An empirical study used to estimate the causal impact of an intervention on target population without random assignment. It is a rephrased definition highlighting its purpose for estimating causal relations.

True Experiments

Experimental designs in which the researcher manipulates the independent variable to observe its effect on a dependent variable, with random assignment to control and experimental groups.

Nutritional Benefits

Refers to the advantageous aspects of food substances that contribute to overall health and well-being, including support for body functions, energy, and disease prevention.