- #1

caspeerrr

- 9

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Member advised to use the homework template for posts in the homework sections of PF.

The question is about a box with no movement standing on a hill. The hill has an angle of 25 degrees. The box has a mass of 40 kg.

1. Calculte the gravity

This I still get: F= M x A = 40 x 9,81 = 3,9 x 10^2

The next question tough:

2. Calculate the component Fgravity,x off the gravity alongside the hill.

The component I think they ment is marked on the picture included.

What I did was 390 / sin(25) because the opposite is known (the gravity) and you want to calculate the hypotenuse. The answer indicates this as the right answer tough: Fgravity,x = Fgravity sin(a) = 165,8

Why do they multiply when you should divide?

Am I missing something?

Thanks in advance!

1. Calculte the gravity

This I still get: F= M x A = 40 x 9,81 = 3,9 x 10^2

The next question tough:

2. Calculate the component Fgravity,x off the gravity alongside the hill.

The component I think they ment is marked on the picture included.

What I did was 390 / sin(25) because the opposite is known (the gravity) and you want to calculate the hypotenuse. The answer indicates this as the right answer tough: Fgravity,x = Fgravity sin(a) = 165,8

Why do they multiply when you should divide?

Am I missing something?

Thanks in advance!