2023-24 Physical Science TEST 13A "Work & Mechanical Advantage"

Work

•  the measure of the change in input needed to do a certain amount of work (output)

• devices that change the magnitude, direction, or distance traveled of a force

• a measure of the mechanical advantage taking into account all mechanical losses sustained throughout a machine

• the measure of mechanical advantage for a machine that is 100% efficient (no friction)

• the energy transferred to an object when an external force acts on the object to move it

Mechanical Advantage

•  the measure of the change in input needed to do a certain amount of work (output)

• devices that change the magnitude, direction, or distance traveled of a force

• a measure of the mechanical advantage taking into account all mechanical losses sustained throughout a machine

• the measure of mechanical advantage for a machine that is 100% efficient (no friction)

• the energy transferred to an object when an external force acts on the object to move it

Tags

NGSS.MS-ETS1-2

Simple Machine

•  the measure of the change in input needed to do a certain amount of work (output)

• devices that change the magnitude, direction, or distance traveled of a force

• a measure of the mechanical advantage taking into account all mechanical losses sustained throughout a machine

• the measure of mechanical advantage for a machine that is 100% efficient (no friction)

• the energy transferred to an object when an external force acts on the object to move it

Ideal Mechanical Advantage

•  the measure of the change in input needed to do a certain amount of work (output)

• devices that change the magnitude, direction, or distance traveled of a force

• a measure of the mechanical advantage taking into account all mechanical losses sustained throughout a machine

• the measure of mechanical advantage for a machine that is 100% efficient (no friction)

• the energy transferred to an object when an external force acts on the object to move it

Tags

NGSS.MS-ETS1-1

Actual Mechanical Advantage

•  the measure of the change in input needed to do a certain amount of work (output)

• devices that change the magnitude, direction, or distance traveled of a force

• a measure of the mechanical advantage taking into account all mechanical losses sustained throughout a machine

• the measure of mechanical advantage for a machine that is 100% efficient (no friction)

• the energy transferred to an object when an external force acts on the object to move it

Tags

NGSS.MS-ETS1-2

The effectiveness of a machine or process in converting energy from one form to another is known as _________________________

• Efficiency

• Machine Effectiveness

• Gravitational Inertia

• Mechanical Advantage

Tags

NGSS.HS-PS3-3

Work, as related to physics, is done when

• a force is exerted against an object

• an object remains stationary (no movement)

• a force applied to an object is in the direction the object travels

• a force applied to an object is perpendicular to the direction the object travels

Select the TWO factors needed to compute Work

• distance an object moves

• Power

• force in the direction an object travels

• Mechanical Advantage

The formula for Work is

• Work = Force * Distance

• Work = Force/Distance

• Work = Distance / Force

• Work = Ideal Advantage / Actual Advantage

Tags

NGSS.MS-PS3-5

A person pushes a lawn mower forward. Is work being done?

• Yes

• No