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Two balls are moving on the same smooth horizontal plane. Their velocity components along one adge of the square plane are `10sqrt(3)m//s` & `20 m//s` respectively. Their velocity components along a perpenficular edge are `30 m//s` & `20 m//s`. Find the angle between their directions of motion.

Text Solution

Verified by Experts

The correct Answer is:
`15^(@)`
`tan alpha=30/(10sqrt(3))rArr alpha=60^(@)`
`tan beta=20/20rArr beta=45^(@) rArr alpha-beta=15^(@)`
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