Podcast
Questions and Answers
What is the primary reason for using a long spanner to loosen a tight nut?
What is the primary reason for using a long spanner to loosen a tight nut?
- It is easier to grip.
- It is more portable.
- It provides a greater turning effect. (correct)
- It allows for faster movement.
The moment of a force is independent of the distance from the pivot.
The moment of a force is independent of the distance from the pivot.
False (B)
What is the formula to calculate the moment of a force?
What is the formula to calculate the moment of a force?
Moment of a force = force × perpendicular distance
The moment is measured in __________.
The moment is measured in __________.
Match the following terms with their descriptions:
Match the following terms with their descriptions:
Study Notes
Turning Forces
- A longer spanner is better for loosening a tight nut because it creates a larger turning effect
- Door handles are placed far from the hinges to make it easier to open the door.
- The turning effect on your hand depends on the force and the distance from the pivot point.
- The turning effect of a force is called a moment or torque.
- The formula for calculating a moment is: Moment of a force = force × perpendicular distance (from the force to the pivot).
- The units for moments are newton-metres (Nm).
- The perpendicular distance is the shortest distance between the force and the pivot point.
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Description
This quiz explores the concept of turning forces, also known as moments or torque. Understand how factors like distance from the pivot and the magnitude of force affect the ability to create a turning effect. Test your knowledge on the formula and applications of moments in practical situations.
