A body is thrown upwards from the earth surface with velocity 5ms−1 and from a planet surface with velocity3ms−1 . Both follow the same path. What is the projectile acceleration due to gravity on the planet ? Acceleration due to gravity on earth is10 ms−2 .

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2 ms−2

3.6 ms−2

4 ms−2

5 ms−2

answer is B.

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Detailed Solution

Let g' be the acceleration due to gravity on the planet. As per question, horizontal range is same, sou12sin2θg=u22sin2θg' or u12g=u22g' or g'=u22u12g=3252×10=3.6 ms−2 .

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