ASVAB Mechanical Comprehension Practice Test 69135 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.19
Score	0%	64%

Review

For any given surface, the coefficient of static friction is ___________ the coefficient of kinetic friction.

54% Answer Correctly

	opposite
	lower than
	equal to
	higher than

Solution

For any given surface, the coefficient of static friction is higher than the coefficient of kinetic friction. More force is required to initally get an object moving than is required to keep it moving. Additionally, static friction only arises in response to an attempt to move an object (overcome the normal force between it and the surface).

The mass of an object correlates to the size of the object but ultimately depends on:

66% Answer Correctly

	the object's density
	the object's potential energy
	gravity
	the object's weight

Solution

Mass is a measure of the amount of matter in an object. In general, larger objects have larger mass than smaller objects but mass ultimately depends on how compact (dense) a substance is.

Coplanar forces:

62% Answer Correctly

	have opposite dimensions
	act in a common plane
	pass through a common point
	act along the same line of action

Solution

Collinear forces act along the same line of action, concurrent forces pass through a common point and coplanar forces act in a common plane.

The force required to initally get an object moving is __________ the force required to keep it moving.

76% Answer Correctly

	opposite
	the same as
	higher than
	lower than

Solution

What type of load creates different stresses at different locations on a structure?

60% Answer Correctly

	impact load
	dynamic load
	non-uniformly distributed load
	static uniformly distributed load

Solution

A concentrated load acts on a relatively small area of a structure, a static uniformly distributed load doesn't create specific stress points or vary with time, a dynamic load varies with time or affects a structure that experiences a high degree of movement, an impact load is sudden and for a relatively short duration and a non-uniformly distributed load creates different stresses at different locations on a structure.