Final answer:
In this question, we are given a 20 kg box sliding down a ramp inclined at 30°. Using the formulas for weight, gravitational force, and net force, we can calculate the forces acting on the box.
Step-by-step explanation:
In this question, the subject is Physics and the grade level is High School.
Given that a 20 kg box is sliding down a ramp inclined at 30°, we can calculate the weight of the box, the gravitational force acting on it, and the net force acting in the direction of motion.
The weight can be calculated using the formula W = m * g, where m is the mass of the box and g is the acceleration due to gravity. The gravitational force acting on the box is given by F = m * g * sin(θ), where θ is the angle of the ramp. Finally, the net force can be found by subtracting the force of friction from the gravitational force.
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