What is vector quantity and magnitude?
What is that Nm sign used as a unit to measure torque?
What is that Nm sign used as a unit to measure torque?
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Torque is the rotational equivalent of force. It's a "push" to make something rotate.
Torque is measured in Newtons (N) times meters (m) because torque equals the force (measured in N) times the radius (measured in m) at which the force is applied.
Imagine holding a wheel (horizontally so gravity isn't an issue). If you push on the edge, it starts spinning. If you push on a spoke somewhere in the middle of the wheel, it doesn't turn as fast. And no matter how hard you push on the exact center of the wheel, you won't get it to spin.
A vector is something that has magnitude and direction. Magnitude just means size.
Vectors are drawn as arrows, which have length and direction. But the magnitude can be units other than length. Many quantities in physics are vectors, such as velocity and force.
Some examples of vectors: "10 feet to the east", "100 N at an angle 30° above horizontal", "10 Nm clockwise".
Some things that are NOT vectors: "east", "10 kg", "the speed of light"
Torque is measured in Newtons (N) times meters (m) because torque equals the force (measured in N) times the radius (measured in m) at which the force is applied.
Imagine holding a wheel (horizontally so gravity isn't an issue). If you push on the edge, it starts spinning. If you push on a spoke somewhere in the middle of the wheel, it doesn't turn as fast. And no matter how hard you push on the exact center of the wheel, you won't get it to spin.
A vector is something that has magnitude and direction. Magnitude just means size.
Vectors are drawn as arrows, which have length and direction. But the magnitude can be units other than length. Many quantities in physics are vectors, such as velocity and force.
Some examples of vectors: "10 feet to the east", "100 N at an angle 30° above horizontal", "10 Nm clockwise".
Some things that are NOT vectors: "east", "10 kg", "the speed of light"
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Torque is basically force in rotational dynamics. Instead of linear force, which is measured in Newtons (N) (F=mass*acceleration), and is basically how hard you are pushing or pulling something, torque is how much force something is rotated. A helpful example might be a battery powered drill. If you have it set on low torque, then you can try to rotate the drill the opposite direction that the drill normally rotates will running it, and either stop it or cause it to go the other direction. With high torque you can grab the drill, but you won't be able to stop it and it will likely take your hand with you when it spins.
The reason for Nm (Newton meters) is because the mathmatical formula for torque (tau) is:
Touque= force*distance
where force is in newtons and distance is in meters.
The reason for Nm (Newton meters) is because the mathmatical formula for torque (tau) is:
Touque= force*distance
where force is in newtons and distance is in meters.