KIN 355 final || with 100% Error-free Solutions.
Moment arm correct answers the perpendicular distance from the line of action to the pivot point
torque correct answers sometimes called a moment
Moment correct answers the force multiplied by the moment arm
True correct answers If the line of action of a force does not go through the pivot point of an
object, it will tend to rotate the object. T/F
larger torque correct answers larger moment arm =
no torque correct answers when moment arm = 0...
centric force correct answers applied through axis of rotation
creates no movement, so no rotation
eccentric force correct answers applied some distance away from axis of rotation
creates a moment, so causes rotation
most are this
forces correct answers = translation
torque correct answers = rotation
Closer to edge correct answers Which door is easier to open? One with the knob closer to the
edge, or one with the knob in the middle?
The person closer to the middle correct answers Which person will go up on a seesaw? The
person closer to the middle, or the person farther from the middle?
Angular motion correct answers ____ ____ occurs at a joint, so moments cause the limb to rotate
Moment correct answers A ____ is developed because a force acts at a distance from the axis of
rotation
0 correct answers If a segment is not moving, the sum of the moments must be = to ____
Formula for muscle torque correct answers Mm=Fm x dm
weight correct answers Muscle needs to have larger force than ____ to balance.
Parts of rigid body model correct answers Segment masses
Segment center of mass locations
Segment moments of inertia
, center of mass correct answers point about which a body or body segments mass is evenly
distributed
center of gravity correct answers point about which a body or body segments weight is evenly
distributed
to find center of mass from segment center of masses correct answers = distance from center of
mass x sum of weights
straddle jump correct answers old high jump method
fosbury flop correct answers new high jump method
up correct answers if you lift your limbs, your center of mass goes ___
parabola correct answers The COM follows the pattern of a _____ in the air
body segments correct answers A basketball player appears to remain at a constant height for
brief periods of time by manipulating their ____ ____
stability correct answers The resistance to linear and angular acceleration
-can be static or dynamic
3 factors that influence stability correct answers line of gravity relative to base of support
height of center of mass
mass
line of gravity correct answers the closer the ____ ____ ___ is to the base of support the less
stable the person
height of COM correct answers The stability decreases as the ____ ____ ____ increases
Mass correct answers A greater ____ is more stable and more difficult to tip over
Why pack heaviest items high in backpack? correct answers -Easier on back
-Gets the COM within the base of support
Starts & stops correct answers AP direction
Corners correct answers ML direction
Lever correct answers consists of two forces (effort and resistance forces) acting around a pivot
point (fulcrum)
effort force correct answers A muscle produces an ____ ____
Moment arm correct answers the perpendicular distance from the line of action to the pivot point
torque correct answers sometimes called a moment
Moment correct answers the force multiplied by the moment arm
True correct answers If the line of action of a force does not go through the pivot point of an
object, it will tend to rotate the object. T/F
larger torque correct answers larger moment arm =
no torque correct answers when moment arm = 0...
centric force correct answers applied through axis of rotation
creates no movement, so no rotation
eccentric force correct answers applied some distance away from axis of rotation
creates a moment, so causes rotation
most are this
forces correct answers = translation
torque correct answers = rotation
Closer to edge correct answers Which door is easier to open? One with the knob closer to the
edge, or one with the knob in the middle?
The person closer to the middle correct answers Which person will go up on a seesaw? The
person closer to the middle, or the person farther from the middle?
Angular motion correct answers ____ ____ occurs at a joint, so moments cause the limb to rotate
Moment correct answers A ____ is developed because a force acts at a distance from the axis of
rotation
0 correct answers If a segment is not moving, the sum of the moments must be = to ____
Formula for muscle torque correct answers Mm=Fm x dm
weight correct answers Muscle needs to have larger force than ____ to balance.
Parts of rigid body model correct answers Segment masses
Segment center of mass locations
Segment moments of inertia
, center of mass correct answers point about which a body or body segments mass is evenly
distributed
center of gravity correct answers point about which a body or body segments weight is evenly
distributed
to find center of mass from segment center of masses correct answers = distance from center of
mass x sum of weights
straddle jump correct answers old high jump method
fosbury flop correct answers new high jump method
up correct answers if you lift your limbs, your center of mass goes ___
parabola correct answers The COM follows the pattern of a _____ in the air
body segments correct answers A basketball player appears to remain at a constant height for
brief periods of time by manipulating their ____ ____
stability correct answers The resistance to linear and angular acceleration
-can be static or dynamic
3 factors that influence stability correct answers line of gravity relative to base of support
height of center of mass
mass
line of gravity correct answers the closer the ____ ____ ___ is to the base of support the less
stable the person
height of COM correct answers The stability decreases as the ____ ____ ____ increases
Mass correct answers A greater ____ is more stable and more difficult to tip over
Why pack heaviest items high in backpack? correct answers -Easier on back
-Gets the COM within the base of support
Starts & stops correct answers AP direction
Corners correct answers ML direction
Lever correct answers consists of two forces (effort and resistance forces) acting around a pivot
point (fulcrum)
effort force correct answers A muscle produces an ____ ____
