Mechanical ASVAB Exam Study Guide Solutions

Mechanical ASVAB Exam Study Guide Solutions force - ANSWER-Changes the velocity of an object friction - ANSWER-Acts in opposition to motion, causes effort work to be larger than load work equilibrium - ANSWER-Net force is zero when velocity is not changing viscous drag - ANSWER-Like friction, however increases with speed, varies by shape gravity - ANSWER-Causes objects to fall mass - ANSWER-Amount of substance weight - ANSWER-Force of gravity on a mass lift - ANSWER-Caused by higher speed air flow over a lower speed air flow camber - ANSWER-When a surface is curved airfoil - ANSWER-Shape of a wing, fan or propeller ©EMILLECT2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/14 leading edge - ANSWER-Part that meets airflow first upwash - ANSWER-Airstream that's directed upward trailing edge - ANSWER-Where upper and lower airflow meet downwash - ANSWER-Airstream directed downward thrust - ANSWER-One of four airplane forces which goes forward drag - ANSWER-One of four airplane forces which goes backward elastic recoil - ANSWER-The "reaction" force when pushing on a solid tension - ANSWER-Rope under a force tension rule - ANSWER-Tension is the same throughout buoyancy - ANSWER-If the weight of an object is less than the weight of the fluid it displaces, it will rise negative buoyancy - ANSWER-If the weight of an object is greater than the weight of the fluid it displaces fluid - ANSWER-Air is one ©EMILLECT2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/14 action and reaction - ANSWER-Forces exist only in pairs components of force - ANSWER-The smaller the angle, the larger the effective force component of force rule - ANSWER-Only the component action in the direction the sled is going does work inclined plane - ANSWER-Weight of the stroller acts parallel and normal to the surface inclined plane rule - ANSWER-Total force to keep stroller moving is equal to parallel component plus friction parallel - ANSWER-Going along the surface normal - ANSWER-Going into the surface simple machines - ANSWER-Pulleys, levers, jacks, hydraulics, vises, ramps, vises, cranks, gears pulley - ANSWER-With single, effort is half the load and effort distance is twice the load distance load - ANSWER-Object being lifted load distance - ANSWER-Distance lifted object moves effort - ANSWER-Force exerted ©EMILLECT2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 4/14 effort distance - ANSWER-Distance force is exerted work - ANSWER-Force moving over a distance work input - ANSWER-Effort times effort distance work output - ANSWER-Load times load distance efficiency - ANSWER-The fraction of work output over work input lever - ANSWER-A bar pivoted at some point to magnify force lever rule - ANSWER-friction at the pivot is very small mechanical advantage - ANSWER-The ratio of load over effort effort arm - ANSWER-Length of bar where effort goes in load arm - ANSWER-Length of bar where load is lifte