Newton's Laws
Name:
Newton's Second Law
Read from Lesson 3 of the Newton's Laws chapter at The Physics Classroom:
http://www.physicsclassroom.com/Class/newtlaws/u2l3c.cfm
http://www.physicsclassroom.com/Class/newtlaws/u2l3d.cfm
MOP Connection:
Newton's Laws: sublevels 8 and 9
Free-body diagrams are shown for a variety of physical situations. Use Newton's second law of motion
(∑F=m•a) to fill in all blanks. Use the approximation that g = ~10 m/s/s.
a.
b.
12640 N
18000 N
0.010 kg
98000 N
7840 N
0 m/s2
c.
0N
m=10000 kg
a = 8.0 m/s/s, down
ΣF = 80000 N, down
d.
m=800 kg
a = 6.0 m/s/s, up
ΣF = 4800 N, up
e.
f.
4.9 N
124 N
1380 N
4.9 N
1020 kg
8.82 m/s2, left
9000 N, left
g.
m=0.500 kg
a = 248 m/s2, right
ΣF = 124 N, right
m= 918 kg
a = 1.50 m/s/s, right
ΣF = 1380 N, right
h.
i.
19600 N
147 N
7.5 N
10000 N
147 N
19600 N
m=15.0 kg
a = 0.50 m/s/s, right
ΣF = 7.5 N, right
61.2 kg
1.61 m/s2, left
100 N, left
© The Physics Classroom, 2009
4000 N. right
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