A person pushes exactly horizontally with 300. N of force on Box
A (mass 30.0 kg), which is in direct contact with Box B (60.0
kg). Assume that the ground is level, and there is no
friction between the boxes and the ground. Ignore
air A resistance.
1. What is the magnitude of
the acceleration of Box A, in
m/s2?
2. Which of the following
force vectors should appear in a complete,
full free-body diagram of Box A in this
situation? (Denote the force of the person pushing on the
box as only one force, even though she is using two
hands.) Select ALL that
apply:
A. Weight of Box A
B. Normal Force of floor acting on Box A
C. Force of Person's hands pushing on Box A
D. Force of Box A pushing on Person's hands
E. Force of Box A pushing on Box B
F. Force of Box B pushing on Box A
3. Which of the following
force vectors should appear in a complete,
full free-body diagram of Box B in this
situation? (Denote the force of the person pushing on the
box as only one force, even though she is using two
hands.) Select ALL that
apply:
A. Weight of Box B
B. Normal Force of floor acting on Box B
C. Force of Person's hands pushing on Box A
D. Force of Box A pushing on Person's hands
E. Force of Box A pushing on Box B
F. Force of Box B pushing on Box A
4. What is
the magnitude of the force
of Box A on Box B, in newtons?
5. What is
the magnitude of the force
of Box B on Box A, in newtons?