Answer: 14.7 N
Explanation:
The weight of an object on Earth is given by
\(W=mg\)
where
m is the mass of the object
\(g=9.81 m/s^2\) is the acceleration due to gravity on Earth's surface
In this problem, we have a book of mass m=1.5 kg, so its weight is given by
\(W=mg=(1.5 kg)(9.81 m/s^2)=14.7 N\)