Podcast
Questions and Answers
How is one newton defined?
How is one newton defined?
What is the SI unit of force?
What is the SI unit of force?
What term is used to describe the axis through a pivot point about which a body turns?
What term is used to describe the axis through a pivot point about which a body turns?
In the context of force, what happens when a stationary rigid body is acted upon by a force?
In the context of force, what happens when a stationary rigid body is acted upon by a force?
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Which scenario best describes the turning effect of a force?
Which scenario best describes the turning effect of a force?
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What happens when the handle of a door is either pushed or pulled?
What happens when the handle of a door is either pushed or pulled?
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Study Notes
Unit of Force
- The SI unit of force is the newton (N).
- The unit is named after Sir Isaac Newton, an English scientist who researched force.
- One newton is the force that increases the speed of a 1 kg object by 1 m/s when applied in the direction of its motion.
Turning Effect of a Force
- When a force is applied to a stationary rigid body, it moves in a straight line in the direction of the force.
- If the body is pivoted at a point and a force is applied, it rotates about that point, known as the axis of rotation.
- Examples of turning effect include:
- A wheel turning about its pivoted point when pushed or pulled.
- A door turning about its hinges when the handle is pushed or pulled.
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Description
Learn about the unit of force, newton, and the turning effect of a force on a stationary rigid body. Understand how force affects motion and speed.
