1.

A projectile has same range R for the two angles of projection. If T_(1) and T_(2) are the times of flight in two cases, then:

Answer»

`T_(1)T_(2)propR`
`T_(1)T_(2)propR^(2)`
`T_(1)T_(2)prop1/R`
`T_(1)T_(2)prop 1/R^(2)`

SOLUTION :Range is same for angle of projection `theta` and `(90-theta)`
`T_(1)T_(2)=(2usintheta)/g.(2usintheta(90-theta))/g`
`T_(1)T_(2)=(4U^(2)sinthetacostheta)/g^(2)`
`=2/g.(U^(2)sin2theta)/g=(2R)/g`
`implies T_(1)T_(2)prop R`


Discussion

No Comment Found

Related InterviewSolutions