Question

The topmost and bottom most velocities of a disc are v1 and v2 in the same direction.The radius is R.Find out the velocity of the point which is R/2 above the centre?

Answer 1

@RnR

Answer 2

Pta nhi. :/
@Mashy

Answer 3

don't be so dependent :/

Answer 4

IIT exam mein :P
@Mashy

Answer 5

Rotate kr rhi hai disc?

Answer 6

but dependency ki baat kaun kar raha h :P hmm

Answer 7

pata nahi :/

Answer 8

hmm. ho skta hai.. wait.

Answer 9

:/

Answer 10

oho diagram :P

Answer 11

5v1-3v2/2 ?

Answer 12

nowhere near

Answer 13

3v1-v2/4 ? calculation mistake.

Answer 14

kaise kiya?

Answer 15

v1-v+wr
v2=v+wr
where v is vel of centre of mass
two equations. solve for v and w
vel at a point r/2
v+wr/2.

Answer 16

though the answer is 3v1"+"v2/4 ?

Answer 17

ohho. haan another calc mistake. aa rha hai.

Answer 18

v1=v+wr kahan se aati hai vise?o.O

Answer 19

correction: v2=v-wr
aur topmost point pe vel maximum hoti hai na.. isliye.

Answer 20

oh :O got it :D!

Answer 21

:D

Answer 22

If V1 and V2 are parallel, then the instant centre of rotation is on the dashed diameter of the disc, perpendicular to V1 and V2.

Velocities of points along this diameter follow a simple linear law as shown.