Question

An object is projected vertically upward with speed √gR where R is radius of earth and g is acceleration due to gravity on surface of earth. Find the maximum height attained by it

Answer 1

Answer:

R

Explanation:

Decrease in kinetic energy is equal to increase in gravitational potential energy so,

1/2 mu^2 = mgh/(1 +h/R)

h = u^2/2g - u^2/R

h = r , u = root gr

h = gR/2g-g

h = R

so maximum height will be R.

where R is radius of earth.

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