Activity 1.1.1 Simple Machines Inclined Plane Wedge and Screw

Activity 1.1.1 Simple Machines Inclined Plane Wedge and Screw

Simple Machines Inclined Plane, Wedge, and Screw Principles of Engineering 2012 Project Lead The Way, Inc. The Six Simple Machines Inclined Plane Wedge Screw Inclined Plane A flat surface set at an angle or incline with no moving parts Able to lift objects by pushing or pulling the

load Inclined Plane IMA DE IMA = DR f 0 . 15 t DE = Distance traveled by the effort = L DR = Distance traveled by the resistance = H L( slope)

IMA = H What is the IMA of the inclined plane above? IMA = 15.0 ft / 4.0 ft = 3.75 = 3.8:1 4.0 ft 50 lb Inclined Plane AMA FR AMA = FE f 15 t

4 ft lb 0 2 What is the AMA of the inclined plane above? 50.lb AMA = 20.lb AMA = 2.5 = 2.5:1 What is the efficiency of the inclined plane above? AMA 100= 2.50

100 = 67% % Efficiency = IMA 3.75 Wedge Functions as a moving inclined plane Tapers to a thin edge and is used for splitting, raising heavy bodies, or for tightening by being driven into something Wedge IMA L 10.0 in. DE

IMA = DR H 3.0 in. DE = Distance traveled by the effort = L DR = Distance traveled by the resistance = H L( to height) IMA = H What is the IMA of the wedge shown? IMA = 10.0 in. / 3.0 in. = 3.33 = 3.3:1 250. lb Wedge AMA FR

AMA = FE 700.lb AMA = 250.lb L 10.0 in. What is the AMA of the wedge shown? H 3.0 in. 700. lb 700. lb

AMA = 2.80 = 2.80:1 What is the efficiency of the wedge shown? AMA 100= 2.800 100 = 84% % Efficiency = IMA 3.333 Screw Two Components An inclined plane wrapped around a cylinder, forming the path and pitch A wheel and axle used to

create rotary motion Properties Change rotary motion into linear motion Used as a threaded fastener Large MA Large amount of friction loss Screw Identification Effort Arm Distance If using a wrench, effort arm distance would be the length of the wrench Pitch Thread Information 1/2 13 NC Diameter

Thread description coarse or fine Threads per inch Distance between threads and linear distance traveled by 1 rotation of the screw Diameter Pitch is equal to 1 over the number of threads. If 13 threads per inch, then Pitch is 1/13 of an inch. How far will a screw with 13 threads per inch move linearly if turned one full rotation? 1/13 of a inch Screw IMA

DE IMA = DR 1/4 20 NC DE = One rotation of the effort arm = Circumference DR = Linear distance traveled during one rotation of the effort arm = Pitch Circumference 2 r r IMA = = Pitch P What is the IMA of the screw above if effort is applied by an 8.0in. long wrench?

2 r 8.0inin IMA = = 10in0in5.31 = 1.0in 10in3 1in. 20in Screw AMA FR AMA = FE What is the AMA of the screw shown? 1/4 20 NC 8 in. 35 lb

1200lb AMA = AMA = 34.29 = 34:1 35lb 1200 lb What is the efficiency of the screw shown? AMA 100= 34.29 100 % Efficiency = = 3.4% 1005.3 IMA Why is efficiency so low?

Compound Machines Simple machines working in combination to complete a task Calculating mechanical advantage MA TOTAL = MA1 MA 2 MA 3 ... Image Resources Microsoft, Inc. (2008). Clip art. Retrieved January 10, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx

Recently Viewed Presentations

  • GCSE Design Technology A Creative and Challenging Option

    GCSE Design Technology A Creative and Challenging Option

    Smart materials and developments in new materials. Systems and programmable components . Mechanical components devices. Materials and their working properties. Designing and . Making. Understanding user needs . Writing a design brief and specifications . Developing and communicating design ideas...
  • Pedigree Technologies FleetPOV

    Pedigree Technologies FleetPOV

    When using California driving rules, you'll also see 1st and 2nd meal breaks and Voluntarily Skip options. Recap Screen. Recap will show your daily totals for the last 7 days. ... Some fields will have a selector tool to choose...
  • Concentration, units & dimensions Learning Objectives:  Define Environmental

    Concentration, units & dimensions Learning Objectives: Define Environmental

    Texas A&M University Other titles Arial Verdana Times New Roman Wingdings Watermark Concentration, units & dimensions Examples of Environmental Fluid Mechanics Projects Environmental Fluid Mechanics Transport in the Hydrosphere Concentrations Hydromechanics Point Pollution Sources Non-Point Pollution Sources Storm Water Runoff...
  • Thresholds- The right service at the right time.

    Thresholds- The right service at the right time.

    Thresholds Conference `Right Service Right Time` Floral Pavilion New Brighton 11th January 2017 9.00-1.00pm Agenda for the Day Tea and Coffee on arrival from 8.30am 9.00am Welcome and Introduction Julia Hassall, Director of Children's Services Tony Smith, Lead Member for...
  • Save the Children - The American University in Cairo

    Save the Children - The American University in Cairo

    which directly engages parents of children from the CHOICES intervention to speak out about the benefits of gender equality and so prevent early marriage through peer led behaviour and attitude change amongst other parents.
  • State Compensatory Education (SCE) Program

    State Compensatory Education (SCE) Program

    Intent and Purpose of the SCE Program. Programs and/or services designed to supplementthe regular education program for identified at-risk students. The goal for SCE is to reduce the disparity in performance on (a) the state assessment and (b) rates of...
  • Implementing InterUnit Billing Shared Service Environment Ron Keller

    Implementing InterUnit Billing Shared Service Environment Ron Keller

    Eli - In 1980, Nancy G. Brinker promised her dying sister, Susan, that she would do everything in her power to end breast cancer forever. In 1982, that promise became the Susan G. Komen organization and the beginning of a...
  • OSD Overview

    OSD Overview

    OSD OverviewStatutory Authority. Under Article XIII of the Illinois Insurance Code, the Illinois Director of Insurance ("Director") serves as the statutory conservator, rehabilitator or liquidator of financially impaired and insolvent Illinois domestic insurers, of unauthorized insurers, and as ancillary receiver...