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The lever for which mechanical advantage...

The lever for which mechanical advantage is less than 1 has:

A

fulcrum at the mid point between load and effort.

B

load between effort and fulcrum.

C

effort between fulcrum and load

D

load and effort acting at the same point.

Text Solution

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The correct Answer is:
To solve the question regarding the lever for which the mechanical advantage is less than 1, we can follow these steps: ### Step 1: Understand Mechanical Advantage Mechanical advantage (MA) is defined as the ratio of the load force (output) to the effort force (input). If MA is less than 1, it means that the effort force is greater than the load force. ### Step 2: Identify Lever Types Levers are classified into three types based on the positions of the fulcrum, effort, and load: 1. **First Class Lever**: Fulcrum is between the effort and load. 2. **Second Class Lever**: Load is between the effort and fulcrum. 3. **Third Class Lever**: Effort is between the load and fulcrum. ### Step 3: Analyze the Condition for MA < 1 For a lever to have a mechanical advantage less than 1, the effort arm must be shorter than the load arm. This situation typically occurs in a third class lever where the effort is applied between the fulcrum and the load. ### Step 4: Conclusion Thus, for a lever where the mechanical advantage is less than 1, the correct description is that the effort lies between the fulcrum and the load. ### Final Answer The lever for which the mechanical advantage is less than 1 has the effort lying between the fulcrum and the load. ---
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