11ok
Normal A1 = w2R
Tangential A2 = βR
w=βT Kinematics
Therefore
β2T2*R = Rβ
T2=1/β
T = √(1/β)
chalte cahlte ye sawal(s) bhi dekh lo yaar[1]
1) in case of motion in a straight line :
a)distance is equal to displacement
b)distance is greater than displacement
c)distance is less than displacement
d)none
Subjective type:
2) In case of accelerated circular motion calculate the time taken so that tangential is equal to normal acceleration[ angular accleration is given to be β ]
give answer in terms of β
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34 Answers
11
1both options a and b are correct in q.1, coz displacement can be equal to distance but never greator than it
33No!!
for Q.1 distance≥| displacement | thats why d...
How can u compare scalar and vector.. :P
if it would have been multiple correct then also not a or b... but d
62@kriti..
It can be either a or b but we cant say for sure it will be a or it will be b
so priyam's explanation is correct
answer should be d!
1@virang & others
Again phas gaye[3][3]
see question again i asked when will tangential and normal acch will be equal (i.e. i talked about the vectors not their magnitude
ab batao is it ever possible for a particle in circular motion(as tangential aach vector and normal aach vectors are always perpendicular toeach other
so the ans is never
33thats why i was not replying... same trap inboth questions... in 1st q it was pointed out but then also u got trapped...
11mine doesnt move because..........
.........guess why??????????????
it ws copy pasted [3]
33use image link..
http://www.artofproblemsolving.com/Forum/images/smiles/rotfl.gif
11@ADITYA HAD IT BEEN SINGLE CHOICE UR ANS IS CORRECT
BUT IN CASE OF M.C.Q IT WOULD HAVE BEEN A,C
1ek din aur rook jao dosto main chahta hoon ki atleast 20 answers mile
1I hope a straight lines has no bends........once started u cannot come back.........so DISTANCE=DISPLACEMENT.............
ans A
1akand
y cannot come back
particle can retrace the same path
eg:
ball thrown vertically upward
1ya palani..........sorry dint think tht way...............
so ANSWER CANNOT be A...........its obviously B then..........hey wait........it can be both A and B...........but since only one option is rite.........ANSWER IS D.........
1Answer should be d coz dist will b equal to displacement when the body just moves frm 1 pt to another in straight line but dist will b greater when it again comes back.......in the question it's only given dat it's a st line motion, so ans shud be d.
1i am waiting for every one to answer
@subhash try out the subjective problem also
24Q1
If single choice then d
If multiple answer then a,b (as pointed out by many users above me)
\left|displacement \right|\leq distance