The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The objects velocity is negative in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
[Ques. 2] A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the string is horizontal, the speed of the mass is 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 16 N
b. 17 N
c. 21 N
d. 11 N
e. 25 N
[Ques. 3] The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The objects velocity is positive in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
[Ques. 4] A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the string makes an angle of 40 degrees below the horizontal, the speed of the mass is 5.0 m/s. What is the magnitude of the tension in the string at this instant?
a. 9.5 N
b. 3.0 N
c. 8.1 N
d. 5.6 N
e. 4.7 N
[Ques. 5] A 50-kg child riding a Ferris wheel (radius = 10 m) travels in a vertical circle. The wheel completes one revolution every 10 s. What is the magnitude of the force on the child by the seat at the highest point on the circular path?
a. 0.29 kN
b. 0.49 kN
c. 0.69 kN
d. 0.20 kN
e. 0.40 kN
[Ques. 6] The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The objects velocity is zero in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
[Ques. 7] A 0.50 kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the mass is at the highest point of the circle the speed of the mass is 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 21 N
b. 11 N
c. 16 N
d. 26 N
e. 36 N
[Ques. 8] A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?
a. 7.0 N
b. 2.0 N
c. 3.1 N
d. 5.1 N
e. 6.6 N
[Ques. 9] The figure shows the distance versus time graph of an object.
The acceleration of the moving object is
a.
zero.
b.
constant.
c.
increasing.
d.
decreasing.
e.
not determinable.
[Ques. 10] A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the mass is at the lowest point on the circle, the speed of the mass is 12 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 31 N
b. 36 N
c. 41 N
d. 46 N
e. 23 N
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