Question

An artist is creating a gigantic mobile using old cars. On one end of the mobile, a 2100 lb Plymoth is suspended 30 feet from the fulcrum. In order for the mobile to be balanced, where should the artist suspend a 1400 lb Volkswagon?

a
20 feet from the fulcrum

b
7 feet from the fulcrum

c
45 feet from the fulcrum

d
on the fulcrum

Answer 1

C. 45 feet from the fulcrum

• That artist should suspend a 1400 lb/pounds Volkswagen.

Answer 2

c 45 feet from the fulcrum

Step-by-step explanation:

The moment at the fulcrum must be the same for each car. If the distance is d, then the artist must have ...

(2100 lb)(30 ft) = (1400 lb)(d)

2100·30/1400 ft = d = 45 ft

The Volkswagen should be 45 ft from the fulcrum.