An 8.0-kg object rests on the floor of an elevator which is accelerating downward at a rate of 1.3 m/s
2. What is the magnitude of the force the object exerts on the floor of the elevator?
a.
59 N
b.
10 N
c.
89 N
d.
68 N
e.
78 N
[Ques. 2] A 6.0-kg object is suspended by a vertical string from the ceiling of an elevator which is accelerating upward at a rate of 1.8 m/s
2. Determine the tension in the string.
a.
11 N
b.
70 N
c.
48 N
d.
59 N
e.
62 N
[Ques. 3] The horizontal surface on which the objects slide is frictionless. If F = 6.0 N and M = 1.0 kg, what is the magnitude of the force exerted on the large block by the small block?
a.
7.7 N
b.
9.8 N
c.
9.1 N
d.
8.4 N
e.
6.5 N
[Ques. 4] The horizontal surface on which the objects slide is frictionless. If M = 1.0 kg and the magnitude of the force of the small block on the large block is 5.2 N, determine F.
a.
6.0 N
b.
9.0 N
c.
7.8 N
d.
4.8 N
e.
4.1 N
[Ques. 5] An astronaut who weighs 800 N on the surface of the Earth lifts off from planet Zuton in a space ship. The free-fall acceleration on Zuton is 3.0 m/s
2 (down). At the moment of liftoff the acceleration of the space ship is 0.50 m/s
2 (up). What is the magnitude of the force of the space ship on the astronaut?
a.
41 N
b.
0.29 kN
c.
0.24 kN
d.
0.20 kN
e.
0.37 kN
[Ques. 6] If F = 5.0 N, what is the magnitude of the force exerted by block 2 on block 1?
a.
17 N
b.
19 N
c.
21 N
d.
23 N
e.
5.0 N
[Ques. 7] If P = 6.0 N, what is the magnitude of the force exerted on block 1 by block 2?
a.
6.4 N
b.
5.6 N
c.
4.8 N
d.
7.2 N
e.
8.4 N
[Ques. 8] The surface of the inclined plane shown is frictionless. If F = 30 N, what is the magnitude of the force exerted on the 3.0-kg block by the 2.0-kg block?
a.
18 N
b.
27 N
c.
24 N
d.
21 N
e.
15 N
[Ques. 9] The horizontal surface on which the objects slide is frictionless. If F = 12 N, what is the tension in string 1?
a.
35 N
b.
30 N
c.
40 N
d.
45 N
e.
25 N
[Ques. 10] The horizontal surface on which the objects slide is frictionless. If M = 2.0 kg, the tension in string 1 is 12 N. Determine F.
a.
25 N
b.
20 N
c.
30 N
d.
35 N
e.
40 N
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