1) If you were asked \"what force keeps a satellite in its orbit around the eart

Question

1) If you were asked "what force keeps a satellite in its orbit around the earth", what would you say? What would happen to the satellite if that force were suddenly removed?

2) Where shold you stand on the earth's surface to experience the most centripetal acceleration? The least? Hint 1: how long does it take for the earth to make 1 revolution about its axis of rotation? Hint 2: the R n equation 4 is the distance from the axis of rotation to the mass.

3) When constructing a roller coaster, the designer wishes the riders to experience weightlessness as they round the top of the hill. How fast must the car be going if the radius of curvature at the hill top is 20m.

Explanation / Answer

1) that is gravitational force .

when this force is suddenly removed. satellite will go along tangentially to that point with same speed.

2) a_c = w.r   so where r is max. (omega is same) .

so at equator.

3) N = mg - v^2/r =0

v = sqrt(rg)= 14 m/s

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