Torque resistance - PowerPoint PPT Presentation
Problem Statement
Problem Statement. An automobile drive shaft is made of steel. Check whether replacing it with a drive shaft made of composite materials will save weight?. Design of a Composite Drive Shaft Autar K. Kaw. WELCOME TO COMPOSITE MATERIALS. Problem Description. Following are fixed
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Problem Statement
Problem Statement. A drive shaft for a Chevy Pickup truck is made of steel. Check whether replacing it with a drive shaft made of composite materials will save weight?. Design of a Composite Drive Shaft. Why composite materials?. Light weight ___ reduces energy consumption.
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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: 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. 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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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. 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 ≡ 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
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. 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. 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?.
Torque
Torque. How do you make an object start to rotate?. Pick an object in the room and list all the ways you can think of to make it start rotating. Torque. Let’s say we want to spin a can on the table. A force is required.