In a 94 s interval, 642 hailstones strike a glass window of area 0.878 m2 at an angle 34◦?
window surface. Each hailstone has a mass of
8 g and speed of 9.7 m/s.
If the collisions are elastic, find the average
force on the window.
Answer in units of N.
2. Find the pressure on the window.
Answer in units of N/m
- NCSLv 72 months ago
F = m * dv/dt
F = dm/dt * v
since the velocity is constant and it's the mass that changes
F = 642*0.008kg/94s * 2*9.7m/s*sin34º = 0.593 N
p = F/A = 0.675 Pa
or 675 mPa
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