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What is the gravitational force experienced by a box of mass 50 kg moving down a frictionless plane inclined at a 60° angle? Choose 1 answer:

A. 490 N
B. 9.8 N
C. 245 N
D. 424 N

Answer :

D. The gravitational force experienced by a box of mass 50 kg on a 60° frictionless incline is approximately 424 N, calculated using the formula Fg = m * g * sin(θ).

To calculate the gravitational force acting along the incline, we use the formula:

Fg = m * g * sin(θ)

where m is the mass of the box, g is the acceleration due to gravity (9.8 m/s²), and θ is the angle of incline.

Given:

  • m = 50 kg
  • g = 9.8 m/s²
  • θ = 60°

Using the sine function for the angle 60°, we get sin(60°) = √3/2 ≈ 0.866.

Now, the gravitational force along the incline is:

Fg = 50 kg * 9.8 m/s² * 0.866 ≈ 424 N

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