Explanation If the applied force and the resistance are situated in opposite sides of the axis, it is known as first-class lever. Write the expression to find the mechanical advantage. MA = m o m e n t a r m ( f o r c e ) m o m e n t a r m ( r e s i a tan c e ) Here, MA is the mechanical advantage

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Question

Chapter 13, Problem 7IP

Summary Introduction

To explain: Whether the mechanical advantage of a first-class lever is greater than, less than or equal to one.

Concept introduction: A rigid bar which can be rotated about an axis due to a force which can move a resistance is known as lever. The liver can be classified as first-class lever, second class lever and third-class lever.

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Chapter 13, Problem 6IP

Chapter 13, Problem 8IP

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Solution Summary: The author explains that the mechanical advantage of a first-class lever is greater than, less than or equal to one in accordance with the position of the fulcrum.

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