You place a box weighing 253.1 n on an inclined plane that makes a 39.7◦ angle with the horizontal.
compute the component of the gravitational force acting down the inclined plane.
answer in units of n.

Explanation:

The weight of the box is

W = 253.1N

Weight is on an incline plane

θ = 39.7°

The weight of an object is always acting downward

So, the weight makes an angle of 39.7° with the vertical component

Then, it's horizontal component is

Wx = W•Sinθ

Wx = 253.1 × Sin 39.7°

Wx = 161.67 N

The horizontal component of the weight is 161.67N

This is the force acting down the plane.

Check attachment

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