A man weighing 82 kg holds on his raised hand a weight weighing 18 kg, on an inclined plane at 60 ° to the horizon. The force with which it presses on the plane is?
To find the value of the force of pressure of a person holding a weight on an inclined plane, we apply the formula: P = N = Ft * cosα = m * g * cosα = (mh + mg) * g * cosα.
Constants and variables: mh – human weight (mh = 82 kg); mg – weight of the weight (mg = 18 kg); g – acceleration due to gravity (g ≈ 10 m / s2); α – angle of inclination of the plane (α = 60º).
Calculation: P = (mh + mg) * g * cosα = (82 + 18) * 10 * cos 60º = 500 N.
Answer: A person holding a weight presses on an inclined plane with a force of 500 N.
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