Solution Found!
A truck is traveling horizontally to the right (Fig.
Chapter 4, Problem 1MCQ(choose chapter or problem)
A truck is traveling horizontally to the right (Fig.4–38). When the truck starts to slow down, the crate on the (frictionless) truck bed starts to slide. In what direction could the net force be on the crate?
() No direction. The net force is zero.
() Straight down (because of gravity).
() Straight up (the normal force).
() Horizontal and to the right.
() Horizontal and to the left.
Questions & Answers
QUESTION:
A truck is traveling horizontally to the right (Fig.4–38). When the truck starts to slow down, the crate on the (frictionless) truck bed starts to slide. In what direction could the net force be on the crate?
() No direction. The net force is zero.
() Straight down (because of gravity).
() Straight up (the normal force).
() Horizontal and to the right.
() Horizontal and to the left.
ANSWER:
Problem 1MCQ
A truck is traveling horizontally to the right (Fig. 4–38). When the truck starts to slow down, the crate on the (frictionless) truck bed starts to slide. In what direction could the net force be on the crate?
(a) No direction. The net force is zero.
(b) Straight down (because of gravity).
(c) Straight up (the normal force).
(d) Horizontal and to the right.
(e) Horizontal and to the left.
Step By Step Solution
Step 1 of 2
There are no net vertical forces as the force due to gravity on the crate is cancelled by the normal force. Similarly there is no net horizontal force on the crate as it sits on a frictionless truck bed.