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Logistics > QUESTIONS & ANSWERS > MSSC- M3 Mechanical Principles (All)

MSSC- M3 Mechanical Principles

Document Content and Description Below

MSSC- M3 Mechanical Principles A mechanism refers to - ✔✔both parts and a complete machine A(n) _ is produced when the forces applied to a lever cause it to rotate - ✔✔rotational moment A force that makes an object rotate about a point is called - ✔✔torque Levers are classified as - ✔✔First class, Second class, or Third class The English unity of measurement of weight is the - ✔✔pound-force (lb-f) Torque is calculated by multiplying a forced times - ✔✔a distance The Law of Moments can be used to determine - ✔✔both the force needed to balance or force needed to move a load The mechanical advantage of a third-class lever can be found by the ratio of the length of the _ arm divided by the length of the _ arm - ✔✔effort, resistance Mechanical advantages is the ratio of the force required to move a load divided by - ✔✔the effort force applied Mass is the - ✔✔amount of material in an object A third-class lever has its - ✔✔effort arm between the fulcrum and the load The mechanical advantage of a second-class lever can be found by the ratio of the length of the _ arm divided by the length of the _ arm - ✔✔effort, resistance A second-class lever has its - ✔✔load between the fulcrum and the effort arm A spring scale is used to measure - ✔✔force A wheelbarrow is an example of a _ lever - ✔✔second-class A first class lever can move greater forces if - ✔✔the effort arm is lengthened and the resistance is shortened A pair of ice tongs is an example of a _ lever - ✔✔third-class Which of the following is one of the six mechanisms of safety rules - ✔✔Keep your work area safe and clean The three common types of mechanisms are levers, _, and inclined planes - ✔✔wheels The mechanical advantage of a first-class lever can be found by the ratio of the length of the _ arm divided by the length of the _ arm - ✔✔effort, resistance The metric system expresses force in - ✔✔newtons A _ is a bar or beam atop a fulcrum that is used to transmit force from one point to another - ✔✔lever How should the lever shown move - ✔✔counterclockwise

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