Hello, I have a lab after tomorrow, and I am very bad at physics. I want to prep
ID: 1767589 • Letter: H
Question
Hello, I have a lab after tomorrow, and I am very bad at physics. I want to prepare myself for the lab since it's hard and long. Pictures 1 - 3 , are explanations of the lab, 4 - 6 are the lab that we're assigned to do. I prefer that you print out the lab paper (fourth & fifth & sixth page). and then take a picture of them.
There will be a lot of measurments and stuff like that. But I want you to put random numbers in each column (assuming you have equiment in front of you) and then explain how you answered that (if there was a formula or something). You can do one row only , so I can get the idea only.
Answer questions 1 - 6 briefly. ( in the last two pages )
This is really hard for me. I really need your help. i just want to get the idea of the lab.
OPEN THE PICTURES IN A NEW TAB , SO YOU CAN READ THE LAB PAGES
Thanks
There will be a lot of measurments and stuff like that. But I want you to put random numbers in each column (assuming you have equiment in front of you) and then explain how you answered that (if there was a formula or something). You can do one row only , so I can get the idea only.Explanation / Answer
Basically, the main thing is, :
a) Slope of displacement vs time graph gives Velocity and Velocity vs time gives acceleration
Ans1) The slope of V avg vs t avg curve will give us the acceleration. For the motion under free fall, force is constant and hence the acceleration is also constant. This can be verified from the graph as the slope will turn out to be a straight line.
Ans2) The theoretical value of the acceleration due to free fall is 9.81 m/s2.
You can draw the curve which is being asked, (Draw the best fit straight line) and measure its slope. [Slope is nothing but tan theta, which is Y/X. In our case it will be Vavg / t avg].
% discrepancy can be calculated as: % discrepancy = (Experimental - theoretical)*100 / Theoretical
Ans3) The shape of Vavg vs t avg curve tells us that the body is under constant accelerated motion. i.e its acceleration is constant.
Ans4) Yes it will turn out to be more or less same. (Except for some experimental errors).
Ans5) Air resistence is proportional to velocity.
So, greater the velocity, greater the air resistance and
hence, as time passes in a free fall, velocity increases but along with it air resistance also increases and so net acceleration decreases.
Ans6) Yes, there are lot of evidence of air resistance.
One of them is, when the rain falls, it is air resistance that limits the velocity of water droplets otherwise they would have striked with great velocity.
As the rain falls, its velocity increases, and so the air resistance, at certain point, the air resistance equals the gravity and net acceleration at that point becomes zero. So, velocity becomes constant (This is known as terminal velocity and would not have been possible without air resistance)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.