Ch. 4 Forces in One Dimension

An interaction with this causes a gravitational force

• Earth

• String

• Supporting Surface

• Spring

• Rough Surface

Tags

NGSS.HS-PS2-4

An interaction with this causes a normal force

• Earth

• String

• Supporting Surface

• Spring

• Rough Surface

An interaction with this causes a Tension force

• Earth

• String

• Supporting Surface

• Spring

• Rough Surface

Tags

NGSS.HS-PS2-1

An interaction with this causes a Spring Force

• Earth

• String

• Supporting Surface

• Spring

• Rough Surface

An interaction with this causes a Friction Force

• Earth

• String

• Supporting Surface

• Spring

• Rough Surface

The rule for the direction of Fg

• Always Up

• In the direction of motion

• Depends on the exact situation

• Toward the Center of the Earth (down)

• Against the direction of motion

Tags

NGSS.HS-PS2-4

The rule for the direction of Normal Force, n

• Always Up

• Parallel to the surface

• Perpendicular to the surface

• Toward the Center of the Earth (down)

• Against the direction of motion

The rule for the direction of Friction force, f

• Always Up

• Parallel to the surface; against motion

• Perpendicular to the surface; with motion

• Toward the Center of the Earth (down)

• Always left; never right

The rule for the direction of force of spring, Fs

• Always Up

• In the direction of motion

• Parallel to surface

• Toward the Center of the Earth (down)

• Opposite how you displaced the spring

The meaning of this symbol - Fg

• Force of Spring

• Gravitational Field Strength

• Mass

• Weight

• Spring Constant

Tags

NGSS.HS-PS2-4