p05 011

background image

11. We apply Eq. 5-12.

(a) The mass is m = W/g = (22 N)/(9.8 m/s

2

) = 2.2 kg. At a place where g = 4.9 m/s

2

, the mass is

still 2.2 kg but the gravitational force is F

g

= mg = (2.2 kg)(4.9 m/s

2

) = 11 N.

(b) As noted, m = 2.2 kg.

(c) At a place where g = 0 the gravitational force is zero.

(d) The mass is still 2.2 kg.


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