How much force required to prevent a book from falling if the mass of the book is 50 grams?

The gravitational force on a mass is its weight. We can write this in vector form, where  

→

w

is weight and m is mass, as

→

w

=

m

→

g

.

In scalar form, we can write

w

=

m

g

.

Since  

g

=

9.80

m/s

2

on Earth, the weight of a 1.00-kg object on Earth is 9.80 N:

w

=

m

g

=

(

1.00

kg

)

(

9.80

m/s

2

)

=

9.80

N

Explanation:

33: i think it’s b