Four children are playing in a field. The children form a line, holding hands. The player at the front of the line sta...
Four children are playing in a field The children form a line, holding hands The player at the front of the line starts to spin around faster and faster, causing the others to run around her in a circle, as shown in (Figure 1). While the line of children is rotating, which of the following statements are correct? The player at the front of the line has the smallest angular acceleration. The player at the front of the line has...
A clarinet player hears the warbling of beats twice per second. When trying to play in tune with the nest of the orchestra she finds that by lowering her frequency, she is in true with everyone else at 440 . What was the clarinet player's initial frequency? 2 children and riding on a marry-go-round. The 1st child sits at the edge of the merry-go-round, the 2nd child sits halfway between the edge and the center. Which of the following is...
Three children are riding on the edge of a merry-go-round that is 162 kg, has a 1.60 m radius, and is spinning at 17.3 rpm. The children have masses of 17.4, 29.0, and 32.8 kg. If the child who has a mass of 32.8 kg moves to the center of the merry-go-round, what is the new angular velocity in rpm? rpm An ultracentrifuge accelerates from rest to 100,000 rpm in 2.50 min. (a) What is its angular acceleration in rad/s2?...
Useful Equations and Relations: Rotational Motion rad)- As/r lilclhiell hat the answer you found was checked by you and whether the solution appears to be reasonable or not. (rad) deg)/180 2t rad Irev 1. Consider a clockwise-rotating object, such as the odd-shaped one shown below. The large black dot near the center of the obiect represents the point around which it is rotating, and the line through that point is called the axis of rotation of Pi and P2 represent...
PHYS 121 – Special Problem 1 Multiple Representations and Kinematics Two children are playing a game where they run towards each other and see who can reach a toy that is somewhere between them. In the beginning, Charlie is 23.7 m away from the toy, running towards it at a speed of 0.770 m/s, and is speeding up. At the same time, Amy is 12.5 m away from the toy, is running towards it in the opposite direction as Charlie...
A cockroach named Cicero and a spider named Susan are playing
tag with each other. The “rightward" direction is taken as the
positive x-direction along the pipe. The following plot gives the
velocity versus time for bothCicero (solid line) and Susan (dotted
line).
We also happen to know that Cicero starts at the origin at time
t = 0, and Susan starts 9 cm to the left of Cicero. The period of
time depicted on the plot is divided into...
Winter Work Packet 2018 Th is packet is designed to help you study on kinematics and rotational motion during the break. It is requested that you complete this packet if you currently have less than a 65%, but all students are welcome to complete it. This packet will be due the first day of school, I will not accept it any later. I will be available to help with any questions regarding the problems via REMIND on Wednesday the second...
Part 1: A DVD is initially at rest so that the line PQ on the disc's surface is along the +x-axis. The disc begins to turn with a constant α = 5.0 rad/s2. .1. At-0.40s, what is the angle between the line PQ and the +x-axis? A. 0.40 rad B. 0.80 rad C. 1.0 rad D. 2.0 rad 2. How do the centripetal acceleration and tangential acceleration compare at points P and Q?Part 2: 3. You want to double the radius of a rotating...