Quiz for Chapter 8
Question 1.
Complete the following statement: The angular measure 1.0 radian is equal
to
(a) 0.0175°.
(c) 1.57°.
(b) 57.3°.
(d) 3.14°.
Answer: (b)
Question 2.
A bicycle travels 141 m along a circular track of radius 15 m.
What
is the angular displacement in radians of the bicycle from its starting
position?
(a) 1.0 rad
(c) 3.0 rad
(b) 1.5 rad
(d) 9.4 rad
Answer:
(d)
Question 3.
A grindstone, initially at rest, is given a constant angular acceleration so
that it makes 20.0 rev in the first 8.00 s.
What is its angular acceleration?
(a) 0.393 rad/s
2
(c) 2.50 rad/s
2
Answer:
(a)
(b) 0.625 rad/s
2
(d) 1.97 rad/s
2
Question 4. What is the tangential speed of a lug nut on a wheel of a car if the lug nut is
located 0.114 m from the axis of rotation; and the wheel is rotating at 6.53
rev/sec?
(a) 0.745 m/s
(c) 4.68 m/s
(d) 9.36 m/s
(b) 1.49 m/s
Answer:
(c)
Question 5. What is the tangential speed of Nairobi, Kenya, a city near the equator?
The
earth makes one revolution every 23.93 h and has an equatorial radius of 6380
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 Fall '07
 Russell
 Rotation, Velocity, Radian, tangential acceleration

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