((QUESTION 1))
The driver of a car sets the cruise control and ties the steering wheel so that the car travels at a uniform speed of 15m/s in a circle with a diameter of 100m .
Part A
Through what angular distance does the car move in 3.70min ?
Express your answer using two significant figures.
? = ____________ | rad |
Part B
What arc length does it travel in this time?
Express your answer using two significant figures.
s = _________________ | m |
((QUESTION 2)))
A wheel of radius 2.0m rotates at a uniform speed.
Part A
If a point on the rim of the wheel has a centripetal acceleration of 3.3m/s2 , what is the point
Through what angular distance does the car move in
3.70min ?
(v/r)*t=0.3*3.7*60=66.6radians
in two significant figures=67 radians
What arc length does it travel in this time?
theta*radius=66.6*50=3330m
in two significant figures=3300m
A wheel of radius 2.0m rotates at a uniform speed.
Part A
If a point on the rim of the wheel has a centripetal acceleration of 3.3m/s2 , what is the point
V=15 m/s
R=50m
angular velocity=15/50
=3/10 s^-1
a)angular distance=angular velocity*time
=3*3.7*60/10
=66.6 radians
b)arc lenth=angular distance*R
=50*66.6
=3330 m
c)centripetal acceleration=(tangential speed)^2 /R
tangential speed=sq rt (50*3.3)
=12.845 m/s
((QUESTION 1)) The driver of a car sets the cruise control and ties the steering wheel...
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