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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A projectile of mass m is fired from the surface of the earth at an angle α=60∘ from the vertical. The initial speed υ0 is equal to root G Me / Re . How high does the projectile rise ? Neglect air resistance and the earth’s rotation.

A projectile of mass m is fired from the surface of the earth at an angle α=60∘ from the vertical. The initial speed υ0 is equal to root G Me / Re . How high does the projectile rise ? Neglect air resistance and the earth’s rotation.

A particle of mass m is subjected to an attractive central force of magnitude k/r 2 at a distance a from the centre of force if the distance of other extreme position is b. Find a/b its speed is (k/2ma) ​ k being a constant. If at the instant when the particle is at an extreme position in its closed orbit