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The scientific method consists of making an observation, ask a question, formulate hypothesis, predict, test, iterate
The scientific question that can be asked is; <u>What is the </u><u>depth of the well</u>
<u />
The reason why the above question is appropriate is as follows:
The items Jack and Jill found at the well
- No pail
- A stopwatch
- Nine equal sized rocks
The information they can get using what they found are;
The time it takes the rock to reach the water surface in the well
The depth of the well
The well's depth, <em>h</em>, is given using the equation of free fall, as follows;
Where;
g ≈ Acceleration due to gravity ≈ 9.81 m/s²
By recording the time each rock takes to reach the water surface in the well, the average depth of the well, , can be found by finding the average of the 9 calculated values for <em>h</em> using the 9 stones
Therefore;
The scientific question that is specific and testable is <u>how </u><u>deep </u><u>is the </u><u>well</u><u>, or what is the well's depth</u>
Learn more about scientific method here:
Answer:
The maximum value of the driving force is 1044.01 N.
Explanation:
Given that,
Weight of the object, W = 50 N
Force constant of the spring, k = 210 N/m
The system is undamped and is subjected to a harmonic driving force of frequency 11.5 Hz.
Amplitude, A = 4 cm
We need to find the maximum value of the driving force. The force is given by the product of mass and maximum acceleration as :
.....(1)
A is amplitude
m is mass,
is angular frequency
Angular frequency is given by :
Equation (1) becomes :
So, the maximum value of the driving force is 1044.01 N.