The gravitational potential energy of a body of mass m at the earth's surface is mgR_e . Its gravitational potential energy at a height R_efrom the earth's surface will be ..... (Here R_eis the radius of earth)

The gravitational potential energy of a body of mass m at the earth's

1.	The gravitational potential energy of a body of mass m at the earth's surface is mgR_e . Its gravitational potential energy at a height R_efrom the earth's surface will be ..... (Here R_eis the radius of earth)
Answer» `-2 mg R_e` `2 mg R_e` `1/2 mg R_e` `-1/2 mg R_e` Solution :`IMPLIES DeltaU = U_(2) - U_1 = (MGH)/(1+(H)/(R_e) ) = (mgh)/(1+R_e/R_e) = (mgR_e)/2` `:. U_2 - (-mg R_e) = (mgR_e)/2` `:. U_2 =-1/2 mg R_e`