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3 years ago

An inclined plane makes an angle of 30.0º with the horizontal.

Physics

1 answer:

Wittaler [7]3 years ago

4 0

The force required to push the box upward is 145.3N and the force to pus the box downward is -109.3N

Data given;

mass = 15kg
angle = 30 degree
acceleration = 1.2 m/s^2
acceleration due to gravity = 9.8 m/s^2

<h3>Force against gravity</h3>

To move the plane upward, the box will move against gravity.

$F = F - mgcos X\\
ma = F - mg cosX$

Let's solve for F

$ma = F - mgcosX\\
15*1.2 = F - 15*9.8 * cos 30\\
18 = F - 127.30\\
F = 18 + 127.30\\
F = 145.3N$

<h3>Force towards gravity</h3>

When the force pushes the box down the inclined plane, it moves towards gravity.

$F = F + mgcosX\\
ma = F + mgcosX\\
15*1.2 = F + 15*9.8*cos30\\
F = -109.3N$

The force required to push the box upward is 145.3N and the force required to push the box downward is -109.3N

Learn more on force across an inclined plane here;

brainly.com/question/11888124

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Explanation:

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So now there are two forces on the box

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