Physics 8.2A Sample problems

Slides:

Advertisements

Similar presentations

Torque and Rotation.

Advertisements

Torque and Rotation Physics.

Torque Torque is defined as the tendency to produce a change in rotational motion.

Torque Chapter 8 Section 1.

1. A motorcycle plus rider has a mass of 1000 kg. They travel inside a loop with a radius of 6 m. At the lowest point, the speed is 20 m/s. What force.

Torque: Rotational Statics and Rotational Dynamics Honors Physics.

It will accelerate in a spin!

Welcome to a world full of machines! There are machines all around us!

Want to know the secret to the Force… Youngling, younglings gather round… Use equations you must KL physics2011.

Torque. Angular Speed Angular speed is represented by ω which is the lower case Greek symbol called omega Angular speed is represented by ω which is the.

Torque and Rotation Physics.

 The ability of a force to cause something to turn 9/16 F r = length of lever arm.

Equilibrium We are interested to the study of the conditions for a body to be in equilibrim.

Torque. Tough Nut  Which of the four arrangements is best for tightening a bolt? ABCD.

Torque. A Comparison Which of the following do you think is easier to hold in place? 1 m 1 kg 1 m 1 kg hand Why would one be easier than the other? They.

Mechanical Advantage and the Inclined Plane: More Practice.

Torque. Torque Torque results when a force acts to rotate an object Torque results when a force acts to rotate an object A force applied to some point.

Torque Rotational Motion. Torque  Forces that cause objects to rotate  Two Characteristics that contribute to the effectiveness of torque: Magnitude.

DETERMINATION OF TORQUE

Torque and Center of Mass

Rotational Motion. Difference between torque and force If you want to make an object move, apply a force If you want to make an object rotate, apply a.

Physics Equilibrium: Torque Science and Mathematics Education Research Group Supported by UBC Teaching and Learning Enhancement Fund Department.

Ch. 11 Rotational Mechanics Torque. TORQUE n Produced when a force is applied with leverage. n Force produces acceleration. n Torque produces rotation.

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.

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.

Torque. Every time you open a door, turn on a water faucet, or tighten a nut with a wrench, you exert a turning force. Torque is produced by this turning.

 Point at which all other points on the object rotate around  During motion the CM will move in the same path that a simple particle would move if subjected.

Mechanical Force Notes

Torque. Tough Nut  Which of the four arrangements is best for tightening a bolt? ABCD.

Objectives  Know the definition of torque  Know that torque is directly proportional to the magnitude of the force and the perpendicular distance.

Chapter 8 Rotational Motion.

Project Balance a meter stick.

Rotational Motion Honors Physics. Rotational Motion Objectives: Learn how to describe and measure rotational motion Learn how torque changes rotational.

Torque and Rotation Physics. Torque Force is the action that creates changes in linear motion. For rotational motion, the same force can cause very different.

Torque. Torque: Terms and definitions Close the Door When we apply the force the door turns on its hinges. Thus a turning effect (torque) is produced.

Rotational Motion. Deg, Rad, Grad There are 360 degrees in one rotation of a circe. There are 2π radians in one rotation of a circle. There are 400 gradians.

Motion and Forces in 2 and 3 Dimensions Torque and Rotation.

Formative Assessment. 1. A 130. gram uniform meter stick has a 22.0 g clamp on the 23.0 cm mark, where would you clamp a 35.0 g clamp to make the meter.

ROTATIONAL MECHANICS And the fun continues…. A torque is produced when a force is applied with “leverage.” – Ex. You use leverage when you pull a nail.

TORQUE Tor-ck. TORQUE Have you? Opened a door Turned a faucet Tightened a bolt with a wrench? You applied torque to an object.

Rotational Dynamics and Static Equilibrium

Chapter 8 Rotational Motion

Torque 10.3 (pages 490 – 502). Friday Fun… Unravelled What did you learn? What does it mean to balance? –For an object to balance, you must use the centre.

Torque  If an unbalanced force acts on an object at rest, and: 1)the force does not act along the center of mass of the object, 2)the object is fixed.

Universal Gravitation Part 2. What holds galaxies together? Newton’s Law of Universal Gravitation says:

How do you start the rotation of an object? How do you open an door? What did we learn about the best way to open a door? The most efficient way to open.

Physics 12 Concept Questions

Simple Machines Objectives: Levers Torque and Levers

Torque By: David Olinger Zach Greene.

PHY 131 Chapter 8-Part 1.

How to calculate the torque due to the balance stick

Ch. 8 Rotational Motion.

Part II – Torque & Simple Machines

Mechanical Advantage and the Inclined Plane: More Practice

Do Now Heading: Torque Pick up a lab Get your computer from the cart

Moment of a Force.

An introduction to levers Featuring Wile e Coyote.

Bell Work: Centripetal Motion

An introduction to levers Featuring Wile e Coyote.

9.1 Torque Key Question: How does force create rotation?

Energy, Work, and Power.

Rotational Statics i.e. “Torque”

Moment of a Force.

Machines Levers & Torque.

Presentation transcript:

Physics 8.2A Sample problems

Sample problem #1: A bolt must be tightened with torque of 35 N•m Sample problem #1: A bolt must be tightened with torque of 35 N•m. You use a wrench that is 25 cm long and pull at an angle of 60˚. How long is the lever arm and what force do you exert?

Sample problem #2: You have a wrench that is 0. 475m long Sample problem #2: You have a wrench that is 0.475m long. A job requires 50.0 N•m of torque. If you can exert 432 N of force, what angle is required to complete the job?

Sample problem #3: Kari (56 kg) and Ann (43 kg) want to make a see-saw with a 1.75m piece of wood. Where should they place the pivot to balance?