Answer
a) 78.48 N
b) 0.39 N
c) 7,455,600 N
Work Step by Step
a)
$W=m*g$
$m = 8 kg$
$g = 9.81 \frac{m}{s^{2}}$
$W=(8kg)(9.81\frac{m}{s^{2}})$
$1N=1\frac{kg*m}{s^{2}}$
$(8)(9.81)=78.48$
$W=78.48N$
b)
$W=m*g$
$m = 0.04 kg$
$g = 9.81 \frac{m}{s^{2}}$
$W=(0.04kg)(9.81\frac{m}{s^{2}})$
$1N=1\frac{kg*m}{s^{2}}$
$(.04)(9.81)=.3924$
$W=.39N$
c)
$W=m*g$
$m = 760 Mg$
$1Mg=1000kg$
$m=760,000 kg$
$g = 9.81 \frac{m}{s^{2}}$
$W=(760,000kg)(9.81\frac{m}{s^{2}})$
$1N=1\frac{kg*m}{s^{2}}$
$(760,000)(9.81)=7,455,600N$
$W=7,455,600N$
