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During a hailstorm, hailstones with an average mass of 2 g
Chapter 1, Problem 21P(choose chapter or problem)
QUESTION: Problem 21PDuring a hailstorm, hailstones with an average mass of 2 g and a speed of 15 m/s strike a window pane at a 45° angle. The area of the window is 0.5 m2 and the hailstones hit it at a rate of 30 per second. What average pressure do they exert on the window? How does this compare to the pressure of the atmosphere?
Questions & Answers
QUESTION: Problem 21PDuring a hailstorm, hailstones with an average mass of 2 g and a speed of 15 m/s strike a window pane at a 45° angle. The area of the window is 0.5 m2 and the hailstones hit it at a rate of 30 per second. What average pressure do they exert on the window? How does this compare to the pressure of the atmosphere?
ANSWER:
Step 1:
The average mass of one hailstone m = 2g or 0.002 kg
Speed of the hailstone v = 15 m/s
Angle of the hitting hailstone and the plane of window = 45°
Area of the window A = 0.5 m2
Hit rate of the hailstones N = 30 per second