Understanding Mechanical Devices for Movement

 
Core Knowledge
Core Knowledge
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
 
 
 
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
What are mechanisms
?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The four basic types
of movement
Classification of levers
 
Levers are simply mechanisms that create mechanical advantage, for example when moving large objects. Levers have 3 parts:
1)
 
 
2)
 
 
3)
 
 
 
Homework:
Count the levers in your home. Identify which class of lever the are, and explain your reasoning for your choice.
 
 
 
 
Explain Mechanical Advantage:
 
 
 
 
 
 
 
 
 
 
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
Class 1,2 and 3 levers: Complete the table below including the drawings (page 26)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
Explain Velocity Ratio:
 
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
What is Efficiency?
 
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
 
 
Fulcrum
 
L
 
300N
 
50N
E
 
Load raised: 100mm
Effort raised: 800mm
 
In the same class 2 lever, the wheelbarrow handles are lifted 800mm while
the load is only raised by 100mm. What is the velocity ratio
? 
(page 26)
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
 
Draw a Bell crank and explain what it is below
:
 
CAMS: convert rotary motion into reciprocating and
oscillating motion
 
What are the three stages of movement:
 
Key terms:
Key terms:
Cam
: a mechanism for converting rotary motion into
reciprocation or oscillating motion.
Follower: 
a device that follows the movement of a cam
profile to provide a desired output in a connecting part
.
Friction
: the resistance to movement between two
surfaces that are trying to slide against each other.
Friction generates heat.
 
Apply it (page 28) Draw the profile of a cam that would create
a uniform rise and a sudden fall in a cam follower. What is it’s
name?
 
Name:______________________
 
Year 10 Core Knowledge
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
Explain:
Pulleys and belts:
 
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
V belt
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
Velocity Ratio
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
 
Cranks and sliders
________________________________________________________________________________________________
________________________________________________________________________________________________
________________________________________________________________________________________________
 
 
Name:______________________
 
Year 10 Core Knowledge
Apply it
Name the 4 types of movement:
 
 
 
 
 
 
 
 
 
 
Add photos and annotate any practical work completed
Add photos and annotate any practical work completed
through this module of mechanical devices.
through this module of mechanical devices.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.5 Mechanical devices used to produce movement
1.5 Mechanical devices used to produce movement
Apply it
What is a rack and pinion? (see page 31)
 
 
 
 
 
 
 
 
 
 
 
 
Slide Note
Embed
Share

Delve into the world of mechanical devices used to generate movement, focusing on levers as a critical mechanism for creating mechanical advantage. Learn about the different classes of levers, their applications, and how they enhance efficiency in various tools and equipment. Explore concepts such as velocity ratio and efficiency to deepen your understanding of mechanical systems and their functionality.


Uploaded on Aug 18, 2024 | 0 Views


Download Presentation

Please find below an Image/Link to download the presentation.

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.

E N D

Presentation Transcript


  1. Core Knowledge 1.5 Mechanical devices used to produce movement Name: Group: Teacher:

  2. 1.5 Mechanical devices used to produce movement Pages 25 - 32 What are mechanisms? The four basic types of movement

  3. 1.5 Mechanical devices used to produce movement Pages 25-32 Classification of levers Levers are simply mechanisms that create mechanical advantage, for example when moving large objects. Levers have 3 parts: 1) 2) 3) Homework: Count the levers in your home. Identify which class of lever the are, and explain your reasoning for your choice. Explain Mechanical Advantage:

  4. 1.5 Mechanical devices used to produce movement Pages 25-32 Class 1,2 and 3 levers: Complete the table below including the drawings (page 26) Class 1 Class 2 Class 3 Reason for mechanical advantage Example Pliers or crowbar Wheelbarrow or nutcracker Tweezers or spade

  5. 1.5 Mechanical devices used to produce movement Pages 25-32 Explain Velocity Ratio: ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ What is Efficiency? ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ In the same class 2 lever, the wheelbarrow handles are lifted 800mm while the load is only raised by 100mm. What is the velocity ratio? (page 26) Load raised: 100mm Effort raised: 800mm 50N E 300N Related image Fulcrum L

  6. 1.5 Mechanical devices used to produce movement Pages 25-32 Draw a Bell crank and explain what it is below: CAMS: convert rotary motion into reciprocating and oscillating motion What are the three stages of movement: Apply it (page 28) Draw the profile of a cam that would create a uniform rise and a sudden fall in a cam follower. What is it s name? Key terms: Cam: a mechanism for converting rotary motion into reciprocation or oscillating motion. Follower: a device that follows the movement of a cam profile to provide a desired output in a connecting part. Friction: the resistance to movement between two surfaces that are trying to slide against each other. Friction generates heat.

  7. 1.5 Mechanical devices used to produce movement Pages 25-32 Explain: Pulleys and belts: ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ V belt ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ Velocity Ratio ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ Cranks and sliders ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ Name:______________________ Year 10 Core Knowledge

  8. 1.5 Mechanical devices used to produce movement Pages 25-32 Apply it Name the 4 types of movement: Add photos and annotate any practical work completed through this module of mechanical devices. Apply it What is a rack and pinion? (see page 31) Name:______________________ Year 10 Core Knowledge

Related


More Related Content

giItT1WQy@!-/#giItT1WQy@!-/#giItT1WQy@!-/#giItT1WQy@!-/#giItT1WQy@!-/#