For a point located at a small height above Earth’s surface ( )

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

For a point located at a small height

h

above Earth’s surface (

h \ll R

), the approximate acceleration due to gravity is given by (a)

g_h = g\bigl(1-\tfrac{h}{R}\bigr)

(b)

g_h = g\bigl(1+2\tfrac{h}{R}\bigr)

(c)

g_h = g\bigl(1-2\tfrac{h}{R}\bigr)

(d)

g_h = g\bigl(1-3\tfrac{h}{R}\bigr)