This is not the document you are looking for? Use the search form below to find more!

Report home > Others

Turning Effect of Forces

0.00 (0 votes)
Document Description
TURNING EFFECT OF FORCES MOMENTS Lesson Objectives Identify what are the forces that will give rise to clockwise / anticlockwise moments Calculate clockwise / anticlockwise moments Use the principle of…
File Details
  • Added: May, 12th 2011
  • Reads: 512
  • Downloads: 3
  • File size: 703.02kb
  • Pages: 25
  • Tags: moment, physics, force
  • content preview
Submitter
  • Name: lidewei
Embed Code:

Add New Comment




Related Documents

EFFECT OF BLANCHING TIME ON SELECTIVE MINERAL ELEMENTS EXTRACTION FROM THE SPINACH SUBSTITUTE COMMONLY USED IN BRAZIL

by: shinta, 6 pages

The true spinach does not grow well in warm climates and for that reason is not commercialized in Brazil. Instead, a spinach substitute , originally from New Zealand, is widely used ...

The Effect of Information Quality on Liquidity Risk

by: shinta, 59 pages

The relation between information quality and cost of capital is of significant academic interest and many explanations (e.g., estimation risk, market risk, liquidity) have been posited ...

Effect of Cell Tower radiation- Just a hype

by: ypatnayak, 35 pages

Like any myth constantly reiterated sounds like truth, myths on the effect of cell tower radiation have been hammered on the common man's mind so often that it is considered as the fact of life. ...

The effect of leverage increases on real earnings management

by: shinta, 18 pages

Main subject of this paper is to understand whether there could be an incentive for managers to manipulate cash flow from operating activities (CFO) through the use of real earnings ...

Effect of diet on the fatty acid pattern of milk from dairy cows

by: shinta, 8 pages

Twelve dairy cows 130 days in milk were sorted by milk production and body weight and assigned to three feeding regimens in a 3 × 3 Latin-square design, in order to study the effects of diet on ...

License to Sell: The Effect of Business Registration Reform on Entrepreneurial Activity in Mexico

by: shinta, 45 pages

The number of procedures for registering a business varies from 2 in Canada to 21 in the Dominican Republic. Many have argued, on the basis of cross country evidence, that complex ...

The Effect of Leverage on Financial Markets

by: shinta, 8 pages

When people get excited about their prospects on the stock market, they borrow money from the bank to invest. This leverage effectively couples the bank to the stock market. Thus, interest

Antimutagenic Effect of Curcumin and Its Effect on the Immune Response in Mice

by: shinta, 12 pages

A wide array of antioxidative and anti-inflammatory substances derived from edible plants have been reported to possess chemopreventive and chemoprotective activities. Among the most ...

Effect of Coating and Wrapping materials on the shelf life of apple (Malus domestica cv.Borkh)

by: shinta, 11 pages

The present investigation was carried out to study the effect of different concentrations of calcium chloride (1%, 1.5%, 2%), paraffin wax coating and different wrapping materials ...

THE EFFECT OF FREEZING CONDITIONS OF STRAWBERRY STORAGE ON THE LEVEL OF THAWING DRIP LOSS

by: shinta, 6 pages

The study was undertaken to check the effect of freezing conditions of storing strawberries on the level of the thawing drip loss. Research material was divided into three parts, each of ...

Content Preview
  1. TURNING EFFECT OF FORCES MOMENTS
  2. Lesson Objectives
    • Identify what are the forces that will give rise to clockwise / anticlockwise moments
    • Calculate clockwise / anticlockwise moments
    • Use the principle of moments to solve problems.
  3. MOMENTS What is moments? A force can cause many things to move or stop. When a force causes an object to turn, this turning effect is called moments. Example: A person sitting on a see-saw.
  4. MOMENTS What is moments? A force can cause many things to move or stop. When a force causes an object to turn, this turning effect is called moments. Example: A person sitting on a see-saw.
  5. Types Of Moments
    • There are 2 types of moments:
    • Clockwise moment
    • Anticlockwise moment
  6. Types Of Moments
    • There are 2 types of moments:
    • Clockwise moment
    • Anticlockwise moment
  7. Clockwise Moment When a force causes an object to turn in a clockwise direction, it is called a CLOCKWISE MOMENT . To determine if the force causes a clockwise or anticlockwise moment, we have to ignore all other forces acting on the object. When the girl sits on the see-saw, her weight is the force exerted on the see-saw. weight
  8. Clockwise Moment When a force causes an object to turn in a clockwise direction, it is called a CLOCKWISE MOMENT . To determine if the force causes a clockwise or anticlockwise moment, we have to ignore all other forces acting on the object. When the girl sits on the see-saw, her weight is the force exerted on the see-saw. weight
  9. ANTI-Clockwise Moment When a force causes an object to turn in an anti-clockwise direction, it is called a ANTI-CLOCKWISE MOMENT . To determine if the force causes a clockwise or anticlockwise moment, we have to ignore all other forces acting on the object. When the girl sits on the see-saw, her weight is the force exerted on the see-saw. weight
  10. ANTI-Clockwise Moment When a force causes an object to turn in an anti-clockwise direction, it is called a ANTI-CLOCKWISE MOMENT . To determine if the force causes a clockwise or anticlockwise moment, we have to ignore all other forces acting on the object. When the girl sits on the see-saw, her weight is the force exerted on the see-saw. weight
  11. CALCULATING MOMENTS Moment = force ? perpendicular distance between force and pivot In symbols: Moments = F ? d Weight => F d Unit for moments: Newton-metre (Nm)
  12. Example 1: A cat of weight 20N stands on one end of a see-saw and the distance between the cat and the pivot is 3m, find the moment. Solution: In this case the cat is causing a clockwise moment. Clockwise moment = F x d = 20 x 3 = 60 Nm F = 20N d = 3m
  13. Example 2: A duck stands on one end of a see-saw, 5m away from the pivot. If the weight of the duck is 10N, find the moment. Solution: The duck’s weight is causing an anticlockwise moment. Anticlockwise moment = F x d = 10 x 5 = 50 Nm F = 10N d = 5m
  14. Examples which is the distance? Where is the force & pivot? F d d F F d d d F F
  15. weight weight Principle of Moments For an object to be in equilibrium(stable/not moving), the total clockwise moment must be equal to the anticlockwise moment about the same pivot point. pivot It is the fixed(non moving) point
  16. SOLVING PROBLEMS RELATED TO PRINCIPLE OF MOMENTS Step 1: Identify what are the forces that will give rise to clockwise / anticlockwise moment Step 2: Find the clockwise / anticlockwise moment Step 3: Equate the clockwise and anticlockwise moments
  17. Find the value of d.   WORKED EXAMPLE 10N 30N 6m d
  18. Step 1: Identify what are the forces that will give rise to clockwise / anticlockwise moment
  19. Find the value of d.   WORKED EXAMPLE Anticlockwise moment Clockwise moment 10N 30N 6m d
  20. Step 2: Find the clockwise / anticlockwise moment
  21.   Clockwise moment = Force x distance between force and pivot = 30 x d = 30d Nm     WORKED EXAMPLE Anticlockwise moment Clockwise moment Anticlockwise moment = Force x distance between force and pivot = 10 x 6 = 60 Nm Find the value of d.   Solution: 10N 30N 6m d
  22. Step 3: Equate the clockwise and anticlockwise moments
  23. Find the value of d.   Solution:   Clockwise moment = Force x distance between force and pivot = 30 x d = 30d Nm   Anticlockwise moment = Force x distance between force and pivot = 10 x 6 = 60 Nm   Using the principle of moments,   Clockwise moment = Anti-clockwise moment 30d = 60 d = 60 ? 30 d = 2 m WORKED EXAMPLE Anticlockwise moment Clockwise moment 10N 30N 6m d
  24. Points to note:
    • The unit for force must be in Newtons, the unit for distance must be in metres.
    • The distance must measured from the force to the pivot.
  25.  

Download
Turning Effect of Forces

 

 

Your download will begin in a moment.
If it doesn't, click here to try again.

Share Turning Effect of Forces to:

Insert your wordpress URL:

example:

http://myblog.wordpress.com/
or
http://myblog.com/

Share Turning Effect of Forces as:

From:

To:

Share Turning Effect of Forces.

Enter two words as shown below. If you cannot read the words, click the refresh icon.

loading

Share Turning Effect of Forces as:

Copy html code above and paste to your web page.

loading