Officer Aptitude Rating (OAR) PracticeTest

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Study for the Officer Aptitude Rating Test with flashcards and multiple choice questions. Each question includes hints and explanations to help you understand your strengths and weaknesses. Prepare confidently for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Does the length of the string affect the pull exerted when a weight hangs from it?

No, the pull is only exerted by the weight
Yes, a longer string increases the pull
Yes, a shorter string increases the pull
No, the pull depends on the type of string

The correct answer is: No, the pull is only exerted by the weight

The correct answer is based on the fundamental principle of physics that the force exerted by a weight hanging from a string is determined by the weight of the object itself, regardless of the length of the string. The pull in this scenario refers to the tension in the string, which is equal to the weight when the system is in equilibrium. When a weight hangs freely from a string, the only force acting downward is its weight, which is the product of the mass of the weight and the acceleration due to gravity. The string transmits this force upward as tension. In this case, the length of the string does not play a role in the amount of tension; it simply connects the weight to a support point. If the string were longer or shorter, the amount of force exerted by the hanging weight remains the same. It’s important to note that while a longer string does not increase the pull, it may introduce other factors like elasticity or potential swing of the weight, but these factors do not change the direct pull exerted by the weight under normal conditions. Thus, the tension in the string directly corresponds to the weight it carries.