Does torque really exist?
Torque is a measure of the force that can cause an object to rotate about an axis. Just as force is what causes an object to accelerate in linear kinematics, torque is what causes an object to acquire angular acceleration. Torque is a vector quantity. Torque can be either static or dynamic.
Who discovered torque?
Archimedes
The concept of torque, also called moment or couple, originated with the work of Archimedes on levers.
What is the best way to find torque?
A practical way to calculate the magnitude of the torque is to first determine the lever arm and then multiply it times the applied force. The lever arm is the perpendicular distance from the axis of rotation to the line of action of the force. and the magnitude of the torque is τ = N m.
How do you determine if there is a torque?
If you know the magnitude of the force being applied and the distance from the axis of rotation it is applied, then by multiplying the two, you now know the torque. It is the distance from where the force is applied to the axis of rotation that we refer to as the lever arm. Hope this helps!
Why is it called torque?
The word ‘torque’ generally means the ‘twisting moment’ or ‘turning moment’ and is widely used as an engineering term. The name ‘torque’ was given by the ancient Romans, who in Latin described these necklaces as twisted and spiral screw-shaped using the word ‘torquere’, meaning ‘twisting’ and ‘turning’.
Can normal force cause torque?
The normal force acting on the pivot point can help support the object’s weight, but it can’t create a torque because it’s not applied at any distance away from the pivot.
How to find the direction of the torque vector?
The direction of the torque vector is found by convention using the right hand grip rule. If a hand is curled around the axis of rotation with the fingers pointing in the direction of the force, then the torque vector points in the direction of the thumb as shown in Figure 2.
How is the torque of an engine measured?
They differ in that torque is a vector quantity defined only for a rotatable system. Power however, can be calculated from torque if the rotational speed is known. In fact, the horsepower of an engine is not typically measured directly, but calculated from measured torque and rotational speed.
How are torque and energy the same thing?
Torque and energy have the same dimensions ( i.e. they can be written in the same fundamental units), but they are not a measure of the same thing. They differ in that torque is a vector quantity defined only for a rotatable system. Power however, can be calculated from torque if the rotational speed is known.
Can a door be opened with maximum torque?
Figure 1: Opening a door with maximum torque. Torque can be either static or dynamic. A static torque is one which does not produce an angular acceleration. Someone pushing on a closed door is applying a static torque to the door because the door is not rotating about its hinges, despite the force applied.
What is the equation for finding torque?
The torque (also moment) about an axis, due to a force, is a measure of the effectiveness of the force in producing rotation about that axis. The torque equation is: τ = rFsinθ.
How do you find the direction of torque?
The direction of the torque can be determined by using the right hand grip rule: if the fingers of the right hand are curled from the direction of the lever arm to the direction of the force, then the thumb points in the direction of the torque.
How to calculate torque value?
How to Calculate Torque Method 1 of 3: Finding Torque for Perpendicular Forces. Find the length of the moment arm. Method 2 of 3: Figuring out the Torque for Angled Forces. Start with the distance of the radial vector. Method 3 of 3: Determining Torque with Moment of Inertia and Angular Acceleration. Find the moment of inertia.
How do you calculate torque in physics?
Torque (also called moment — mostly by engineers) is calculated by multiplying force and distance. The SI units of torque are newton-meters, or N*m (even though these units are the same as Joules, torque isn’t work or energy, so should just be newton-meters).