Torque

Jul 12, 2012

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Torque. Torque: a rotary force that has a tendency to cause rotation around an axis (twisting force)T or G Units:Englishmetric ft

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Torque

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1. Torque Torque: a net �off-center� force that causes or tends to cause rotation (i.e., the capability of a force to produce rotation)

Torque

Torque. Torque in 2 and 3 dimensions. Text Sections : 10.6. F. a. F. -F. Torque is what causes rotation. An unbalanced force applied to an object causes it to move (accelerate).

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Torque

Torque. Tough Nut. Which of the four arrangements is best for tightening a bolt?. A. B. C. D. Pivot Point. Rotation of a wheel or wrench takes place with an axis of rotation. The point where the axis intersects the object is the pivot point . . q. q. r. pivot point. Lever Arm.

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Torque

Torque. changing rotational motion. § 10.1–10.2. Example Problem. If the pulley has no mass: What is the machine’s change in potential energy from its initial to its final states? With what speed will the heavier mass hit the ground?. r. m p. v 0 = 0. m 1. m 2. h. Example Problem.

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Torque

Torque. Angular analogue of force Rotary motion T = F x r r is the moment arm or perpendicular distance from the axis of rotation. Torque & Forces. Centric force External force directed through the COG Linear motion or translation Eccentric force

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Torque

Torque. F. ℓ. τ = F·ℓ F and ℓ must be perpendicular . Units: N*m (enter them this way into computer). Axis. A board is placed in a support. F1 and F2 push down on the board. If the board stays stationary, how do the forces compare?. (1) F1 > F2 (2) F1 = F2 (3) F1 < F2. F1. F2.

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Torque

Torque. Chapter 9 – Rotational Dynamics. What is Torque?. Torque is a rotational force around a fixed axis or point. Torque. Torque is represented using the Greek letter tau as follows:  = Fd sin θ -Where F = Force (Newtons) d = lever arm length

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Torque

Physics 7C lecture 12. Torque. Thursday November 7, 8:00 AM – 9:20 AM Engineering Hall 1200. Loosen a bolt. Which of the three equal-magnitude forces in the figure is most likely to loosen the bolt?. Loosen a bolt.

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Torque

Torque. Not just a crappy movie with Ice Cube. http://www.impawards.com/2004/posters/torque.jpg. What Torque is. Torque is a force that produces a rotation Think about using a wrench to turn a bolt Torque depends on TWO THINGS: How much force you apply

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Torque

Torque. Torque ≡ the action of a leveraged force . Torque is the ability of a force to cause rotation or a turning motion. Unbalanced torque provides a rotational acceleration. Torque τ has two components: a perpendicularly applied force, F, and a leverage arm distance, r

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Torque

Torque. Causing Rotational Motion. In order to make an object start rotating about an axis, a force is required However, not only the amount of force applied but also the position from the axis to which it is applied is important in determining the amount of rotation (angular acceleration

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Torque

Torque. T orque is an influence which tends to change the rotational motion of an object. One way to quantify a torque is Torque = Force applied x lever arm=F x r The lever arm is defined as the perpendicular distance from the axis of rotation to the line of action of the force. . Torque.

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Torque

Torque. Torque is defined as the tendency to produce a change in rotational motion. Objectives: After completing this module, you should be able to:. Define and give examples of the terms torque, moment arm, axis, and line of action of a force.

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Torque

r. r. F. F. Torque. The perpendicular distance from the line of action to the pivot point is called the moment arm (r). Torque is the force multiplied by the moment arm. T = F*r, Units: N-m

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Torque

Torque. Torque is defined as the tendency to produce a change in rotational motion. Torque is a twist or turn that tends to produce rotation. * * * Applications are found in many common tools around the home or industry where it is necessary to turn, tighten or loosen devices.

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Torque

Torque. hand. A Comparison. Which of the following do you think is easier to hold in place?. 1 kg. 1 kg. 1 m. 1 m. Why would one be easier than the other? They are the same weight. hand. 1 kg. 1 m. F g. F hand. hand. What is Really Happening?.

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Torque

Torque. Angular Speed. Angular speed is represented by ω which is the lower case Greek symbol called omega ω =v/r Centripetal acceleration can also be a c = ( ω r) 2 F c =mr ω 2. r.

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Torque

Torque. It is easier to open a door when a force is applied at the knob as opposed to a position closer to the hinges. The farther away the force, the more torque there is. Torque – the force(s) that cause an object to rotate

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Torque

Torque. Torque: a net “ off-center ” force that causes or tends to cause rotation (i.e., the capability of a force to produce rotation). torque. d. CG. F. Torque. Torque: a rotary force that has a tendency to cause rotation around an axis (twisting force) T or G

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Torque

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Torque

Torque. We know that Newton’s second law ( ) explains that the net force is the source of an object’s acceleration. What is the source of a rotating object’s angular acceleration? It can’t be just a force, because it matters where on the object that force is applied.

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Torque

Torque. Definition. The tendency of a force applied to an object to cause rotation about an axis. r. F. r. F. Torque is a product of the moment arm (r) and the force F. Cross Product. t = r x F. i x i = 0 i x j = k i x k = -j j x i = -k j x j = 0 j x k = i

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Torque

Torque. AP Physics 1. Causing Rotational Motion. In order to make an object start rotating about an axis, a torque is required. Torque includes not only the amount of force applied but also the distance from the axis to which the force is applied. Distance from axis is called the lever arm.

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