PPT-Rotational Dynamics: Torque

Practice Problems Newtons 2 nd law involving rotations Practice Problem 2 A person exerts a force of 450 N on the end of a door 840 cm wide What is the magnitude of the torque if the force is exerted. Torque. Read pp. 552 – top of 554. You are using a wrench to loosen a rusty nut. Which arrangement will be the most effective in loosening the nut?. Question 8.4 . Using a Wrench. a. c. d. b. e). 11.1 - Torque. Increased Force = Increased Torque. Increased Radius = Increased Torque. 11.1 - . Torque. Only the tangential component of force causes a torque:. 11-1 Torque. This leads to a more general definition of torque:. and rotational inertia. We consider the rotation of . rigid bodies. . A rigid body is an extended object in which the mass is distributed spatially.. Where should a force be applied to make it rotate (spin)? The same force applied at . 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:. Ellen Akers. Radians and Degrees. In degrees, once around a circle is 360˚. In radians, once around a circle is 2. π. A radian measures a distance around an arc equal to the length of the arc’s radius. and rotational inertia. We consider the rotation of . rigid bodies. . A rigid body is an extended object in which the mass is distributed spatially.. Where should a force be applied to make it rotate (spin)? The same force applied at . Conservation of rotational momentum. 1. Why does a wheel keep spinning. ?. Spinning ice skater . Video. . Why is a bicycle stable when it is moving, but falls over when it stops. ?. Why is it difficult to change the orientation of the axis of a spinning wheel?. We consider the rotation of . rigid bodies. . A rigid body is an extended object (as opposed to a point object) in which the mass is distributed spatially.. Where should a force be applied to make it rotate?. Chapter 11. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 11-1. Rolling as Translation and Rotation Combined. 11.01. Identify that smooth rolling can be considered as a combination of pure translation and pure rotation.. Dedra. Demaree, . Georgetown University. © 2014 Pearson Education, Inc.. Rotational Motion. How can a star rotate 1000 times faster than a merry-go-round?. Why is it more difficult to balance on a stopped bike than on a moving bike?. Motion. © 2016 Pearson Education, Inc.. Dynamics of Rotational Motion. (Conservation of angular momentum). Goals for Chapter 10. Torque: “angular force”. To see how torques cause rotational dynamics (just as linear forces cause linear accelerations). HTHS AP Physics 1. M. Dimler. Torque. Torque. is a force that causes an object to turn. Torque. - Force directed perpendicular to the “lever arm” of an object that has the ability to rotate the object around a fulcrum or axis. . Rotational Equilibrium and Dynamics Chapter 8 Magnitude of a Torque What is a torque? A quantity that measures the ability of a force to rotate an object around some axis. r  Example… Imagine opening a door around a hinge. Physics CNameANSWER KEYAP Review PacketLinear and angular analogsLinearRotationx positionx displacementvvelocityaTtangential accelerationVectors in rotational motionUse the right hand rule to determin