Turning Forces in Physics

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

Questions and Answers

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.

False (B)

What is the formula to calculate the moment of a force?

Moment of a force = force × perpendicular distance

The moment is measured in __________.

<p>newton-metres</p> Signup and view all the answers

Match the following terms with their descriptions:

<p>Moment = Turning effect of a force Pivot = Point of rotation Torque = Another name for moment Perpendicular distance = Shortest distance from force to pivot</p> Signup and view all the answers

Flashcards are hidden until you start studying

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.