Newton's Laws

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This material was developed with funding from the
National Science Foundation under Grant # DUE 1601612

Newton's Law

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Newtons

= Ma

+

Mg

200

N – Mg = 0

100

F2

∑Fy =

300

If Force 1 and Force 2 are both in the same direction, the magnitude of the forces are added. (i.e. Both Force 1's and Force 2's direction = 0 degrees)

∑Fx =

F1

Set Magnitude for F1

Equation Builder:

N

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Set the magnitude for each force below.

Set Magnitude for F2

=

= Ma

Mg

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= 0

fk

F1cosθ

θ

–

20

fk

F1sinθ

0

sin

Set the magnitude and direction below.

cos

Kinetic friction = fk= 20

Set Direction for F1

Some text here

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If Force 1 and Force 2 are in the opposite direction the magnitude of the forces are subtracted. (i.e. Force 1's direction = 0 degrees, and Force 2's direction = 180 degrees)

mg sinθ

mg cosθ

Set the incline below.

Y

mg

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sin

Wood on Wood Coefficients to Friction
μs = 0.4 μk = 0.2
Conditions
Static (standing still):
mg sinθ > μs mg cosθ tanθ >μs
Kinetic (moving):
θ > 21.8° movement begins when angle of the incline is greater than 21.8

X

mg cos θ

–

PLAY

mg sinθ

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Drag and drop the weights on to the hook.