2016.01.16 CSCS Daily Study Question:
Which of the following levers has both the muscular and resistive force acting on the same side of a fulcrum and also has a moment arm of muscular force that is longer than the moment arm of the resistive force?
(A) First-Class Lever
(B) Second-Class Lever
(C) Third-Class Lever
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Correct Answer:
(B) Second-Class Lever
Explanation:
The picture on the left is a first-class lever: the fulcrum is between the load (resistive force) and the (muscular) force.
The picture in the middle is a second-class lever: the load and the force are on the same side of the fulcrum and the force is a further distance from the fulcrum (moment arm).
The picture on the right is a third-class lever: the load and the force are on the same side of the fulcrum and the load is a further distance from the fulcrum (moment arm).
Reference:
Essentials of Strength Training & Conditioning 3rd edition p. 69 – 70
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The Certified Strength and Conditioning Specialist (CSCS) exam by the National Strength and Conditioning Association (NSCA) is a four-hour-long, pencil and paper or computer-based examination. The Certified Strength and Conditioning Specialist exam has two sections: “Scientific Foundations” and “Practical / Applied.” Each of these sections consist of questions that the National Strength and Conditioning Association (NSCA) feels are relevant to test the knowledge and experience of a candidate for the Certified Strength and Conditioning Specialist (CSCS) professional credential. Certified strength conditioning specialist comprehensive questions from the Scientific Foundations section include anatomy, exercise physiology, biomechanics, and nutrition. certified strength conditioning specialist comprehensive questions from the Practical / Applied section include program design, exercise techniques, testing and evaluation, and organization / administration (NSCA, 2015).
2016.01.16 CSCS Daily Study Question