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vecA and vecB are vectors such that...

vecA and vecB are vectors such that A +BI= I A -B j. Then, the angle between them is

A

`90^(@)`

B

`40^(@)`

C

`45^(@)`

D

`0^(@)`

Text Solution

Verified by Experts

`g=9.8m//s^2`
Centripetal froce= Weight of the particle
`(mv^2)/R=mg`
`v=sqrt(Rg)`
`=sqrt(20xx10^2xx9.8)`
`:.v=1.4m//s
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