A friend climbs an apple tree and drops a 0.22-kg apple from rest to you, standing 3.5 m below. When you catch the apple, you br
ing it to rest in 0.28 s.
A.) What was the speed of the apple just before you caught it?
B.) What average force did you exert on the apple to bring it to rest? (Be sure to include both the weight of the apple and the force needed to bring it to rest.)
A.) What was the speed of the apple just before you caught it?
B.) What average force did you exert on the apple to bring it to rest? (Be sure to include both the weight of the apple and the force needed to bring it to rest.)
1 answer:
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Answer:
(a). The coefficient of permeability is .
(b). The seepage velocity is 0.0330 cm/s.
(c). The discharge velocity during the test is 0.0187 cm/s.
Explanation:
Given that,
Length = 175 mm
Diameter = 175 mm
Time = 90 sec
Volume= 405 cm³
We need to calculate the discharge
Using formula of discharge
Insert the values into the formula
(a). We will compute the coefficient of permeability
Applying the formula for permeability
Where, Q=discharge
l = length
A = cross-sectional area
h=constant head that causes flow
Plugging the value into the formula
(c). To ascertain the discharge velocity during the testing phase
Utilizing the discharge velocity formula
Substituting the values into the equation
The discharge velocity during the test measures 0.0187 cm/s.
Thus, (a). The coefficient of permeability is .
(b). The seepage velocity computes at 0.0330 cm/s.
(c). The observed discharge velocity during the test equals 0.0187 cm/s.