Nice circular motion

Q1 What is angular velocity of line AB at the instant shown?
Q2 What is angular velocity of B wrt A at the given instant?
Q3Prove that [vB/A]≠[vA/B] (where [ ] denotes magnitude part)

25 Answers

1
rahul wadhwani ·

but how first part give sol. plz

24
eureka123 ·

nooooooo.....

3
msp ·

eureka have u got the third part if so pls explain

11
Subash ·

what is the proof for the third part

1
rahul wadhwani ·

so how a exact ans.

24
eureka123 ·

corrrect.......

1
mkagenius ·

it was asked at that instant....

1
rahul wadhwani ·

how u answer part-a imagine its motion for a while u will see it is irregular [7]

24
eureka123 ·

oh yes.................what a foolish question by me.................thanxx

3
msp ·

i think this question will help u to ans

wat is the relative velocity of approach of the bodis

11
Subash ·

in third q does vB/A denote the relative velocity

3
msp ·

relative velocity

3
msp ·

sory for my first ans i have mistaked with other question please check my soln

angular velocity of the line=vnet/r
=12-3/2
=9/2

1
mkagenius ·

answer for 2;
------
should be w2-w1=4-3=1rad/s;

for q2
-----------
ummm........

1
rahul wadhwani ·

but how first part give sol. plz

24
eureka123 ·

noo. 4.5 rad/s

3
msp ·

please reply fast eureka i know dat i was rong

3
msp ·

wat is the ans for the first part eureka

3
msp ·

i am getting 5 rad/s

24
eureka123 ·

yes yes..............2nd part answer is 1r/s..its easy........plzz try 1st parrt.........

1
rahul wadhwani ·

hey eureka how part c & a is some wat typical if motion is analysed so its angular vel. is not const. in mag. & direction too

1
rahul wadhwani ·

answer of part b is 1 rad/s

24
eureka123 ·

ohhh yes 2nd part was easy...................what about first part .............anyone trying?????

3
msp ·

* shows vector product

3
msp ·

2)ang vel of B wrt to A =3i*12j/(3)2-i*3j/12=vB/A

This will helps u for the third ques also

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