ASVAB Mechanical Comprehension
force - Answer mass × acceleration
vector quantities - Answer forces that has both size and direction
equilibrium - Answer a stable situation in which forces cancel one another
velocity - Answer the speed and direction of a moving object
acceleration - Answer the rate at which velocity changes
pressure - Answer force (in pounds) ÷ area (in inches)
work - Answer force × distance
tension is measured in - Answer pounds-force or newtons
work is measured in - Answer foot-pounds
power - Answer work ÷ time
power is measured in - Answer horsepower (hp)
1 horsepower - Answer 33,000 foot-pounds per minute or 550 foot-pounds per second
mechanical advantage - Answer when a machine multiplies the force you use
mechanical advantage - Answer resistance ÷ effort = output force ÷ input force
fulcrum - Answer point of support to reduce resistance and multiply the effect of effort
resistance arm - Answer the part of a lever that applies a force on an object
effort arm - Answer the part of a lever that you apply an input effort force to.
to determine how much a lever reduces the amount of effort needed to do work -
Answer length of effort arm ÷ length of resistance arm = resistance force ÷ effort force
mechanical advantage of using a lever - Answer effort arm ÷ resistance arm
mechanical advantage of using a ramp - Answer length of ramp ÷ height of ramp =
weight of object being moved ÷ force required to move object
block and tackle pulleys - Answer make lifting heavy objects easier or change the
direction of the pull
force - Answer mass × acceleration
vector quantities - Answer forces that has both size and direction
equilibrium - Answer a stable situation in which forces cancel one another
velocity - Answer the speed and direction of a moving object
acceleration - Answer the rate at which velocity changes
pressure - Answer force (in pounds) ÷ area (in inches)
work - Answer force × distance
tension is measured in - Answer pounds-force or newtons
work is measured in - Answer foot-pounds
power - Answer work ÷ time
power is measured in - Answer horsepower (hp)
1 horsepower - Answer 33,000 foot-pounds per minute or 550 foot-pounds per second
mechanical advantage - Answer when a machine multiplies the force you use
mechanical advantage - Answer resistance ÷ effort = output force ÷ input force
fulcrum - Answer point of support to reduce resistance and multiply the effect of effort
resistance arm - Answer the part of a lever that applies a force on an object
effort arm - Answer the part of a lever that you apply an input effort force to.
to determine how much a lever reduces the amount of effort needed to do work -
Answer length of effort arm ÷ length of resistance arm = resistance force ÷ effort force
mechanical advantage of using a lever - Answer effort arm ÷ resistance arm
mechanical advantage of using a ramp - Answer length of ramp ÷ height of ramp =
weight of object being moved ÷ force required to move object
block and tackle pulleys - Answer make lifting heavy objects easier or change the
direction of the pull
