AravindG
  • AravindG
two bodies fall freely from different heights and arrive at earth in same time.the time of fall of first body is 2 s and other is 1 s .At what height was first body when second began to fall??
Physics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
AravindG
  • AravindG
2.A particle slides from rest from topmost point of a vertical circle of radius r along a smooth chord .Show that the time of descent is same irrespective of chord chosen and find it in terms of g and r
anonymous
  • anonymous
\[\mathsf{h = u_y\cdot t + \frac{1}{2} \cdot (g) \cdot t^2}\] I am assuming the bodies had Zero initial velocity. \[\mathsf{ h = \frac{1}{2} \cdot g \cdot t^2 }\]I think you can take it from here.
AravindG
  • AravindG
hey but bodies cover different heights

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
For different time. Just put in the value of time for the bodies separately.
AravindG
  • AravindG
cnfused
anonymous
  • anonymous
'bodies' sounds a like harsh word for physics. Okay, so we have two Objects A and B. Height or the distance traversed by the Objects is given by the following equation. \[\mathsf{h_{i} = \frac{1}{2}\cdot g \cdot t_{i}^2}\] For the object A, let's assume time taken to land is 2s and for object B 1s. \[\mathsf{h_{A} = \frac{1}{2}\cdot g \cdot t_{A}^2 = \frac{g}{2} \cdot 2^2}\] \[\mathsf{h_{B} = \frac{1}{2}\cdot g \cdot t_{B}^2} = \frac{g}{2} \cdot 1\]
anonymous
  • anonymous
Note. The \(\mathsf{h_{i} = \frac{1}{2}\cdot g \cdot t_{i}^2}\) equation is only valid if the initial velocity of the object 'i' is Zero. \[\]
anonymous
  • anonymous
Hey aravind, do you have a figure (diagram) for the second question?
AravindG
  • AravindG
no
AravindG
  • AravindG
pls answr both the qns
anonymous
  • anonymous
Oh, I thought 1s and 2s is the time taken by each body to land and we have to determine their initial height accordingly. Thanks!
anonymous
  • anonymous
Ishaan. The bodies are released at different times. Otherwise, there is no way they could reach the ground at the same time. (At least under Newton's Laws, we won't get into special relativity.) Let's express the height as a function of time and velocity. \[h_1(t,v(t'))=v(t')⋅t+{1 \over 2}⋅g⋅t^2\] The height of the first object at the time the second object is released can be expressed as \[h_1(2,0)−h_1(1,v(1))\]
anonymous
  • anonymous
I think I got a sign wrong here.
anonymous
  • anonymous
But what about the second question? I don't understand a thing.
anonymous
  • anonymous
I don't understand it either. A figure would be helpful.
JamesJ
  • JamesJ
I think it's asking this: along any such chord as in this diagram, the time for the object to reach the the point where the circle and chord meet is equal. Indians ask the damnest questions in Physics. |dw:1327424415886:dw|
JamesJ
  • JamesJ
Hint: this polar form an the equation of a circle or radius R will be helpful: \[ r = 2A\cos \theta \]
anonymous
  • anonymous
Oh I see, thanks James. I think I can do it now.
JamesJ
  • JamesJ
**correction: "of radius A" [not R!]
AravindG
  • AravindG
k hw to do?
JamesJ
  • JamesJ
Repost this as a new question. It's worth everyone seeing this one.
AravindG
  • AravindG
james k can u help me in permutations its urgent??
AravindG
  • AravindG
pls

Looking for something else?

Not the answer you are looking for? Search for more explanations.