Question

Why
uniform circular motion has acceleration if it has the same speed
everywhere?

Answer #1

The acceleration of an object in a uniform circular motion is
bigger in magnitude if the object ____.
A,B,C,D are yes or no answers!!
a) moves at the same speed around a smaller circle?
Yes/No
b) moves faster around the same circle?
Yes/No
c) has a bigger mass but moves at the same speed around the same
circle?
Yes/No
d) moves at twice the speed around a circle that is twice as big
in radius?
Yes/No

If the speed of an object in uniform circular motion is tripled,
the magnitude of the centripetal acceleration increases by a factor
of :
A. 2
B. 3
C. 9
D. 6
E. 8

For an object in uniform circular motion, be able to describe
how the acceleration of that object depends on the velocity of the
object and the radius of the circular path.
Please explain in simplest terms and give an example using units
given.

An object is in uniform circular motion with a centripetal
acceleration a=4.3 m/s2 . If the period of the circular motion is
T=1.8 s, what is the radius of the circle?
0.56 m
0.71 m
0.14 m
0.35 m
0.46 m

For an object in uniform circular motion, a centripetal
force (acceleration) is required.
a) True
b) False

A) In uniform circular motion, which of the following quantities
are constant?
Check All that Apply, (instantaneous velocity, the tangential
component of velocity, the tangential component of acceleration,
the radial component of acceleration, speed)
B) Which of these quantities are zero throughout the
motion?
Check all that Apply, (instantaneous velocity, the tangential
component of velocity, the tangential component of acceleration,
the radial component of acceleration, speed)

Find the answer and explain
pls.
_____ 1. An object in
uniform circular motion has a constant
A.
velocity B.
acceleration
C. both of these
D. neither of these
_____ 5. When a racecar rounds a
circular banked corner at a constant speed, it has
A. No tangential
acceleration
B. No centripetal
acceleration
C. both of
these
D. Neither of these
_____
6. On an unbanked road surface,
the safe maximum driving speed for rounding a corner is directly...

Consider two satellites A and B orbiting around earth in uniform
circular motion.
• The acceleration of satellite A is 16 times that of satellite
B.
• The period of satellite B is 4 times the period of satellite
A.
Using the concept of Fg as Fc, and the corresponding equations
for orbital period, calculate the ratio of the radius of the motion
of satellite A to that of satellite B (rA/rB = ?).

a. In uniform acceleration, acceleration is CONSTANT. Is
velocity constant too? If yes, explain.
b. Is velocity more than just speed?
c. In a circular motion, what happens if the radius and speed is
doubled? halved?

A rock on a string undergoes uniform circular motion at a
constant radius and with period T (i.e., it makes one complete
revolution around the circle in time T). As a result, the magnitude
of the centripetal acceleration of the object is a c.
Suppose now the motion is changed so that the period is T/2 but the
radius is the same. What will be the new magnitude of the
centripetal acceleration
ac/2
2ac
4ac

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