Answer:
When X = 0
Speed = maximum V (max) = ω A
Acceleration = zero a(max) = - ω^2 A
From x = A sin ω t sin = 0 so displacement = zero
V = ω A cos ω t cos = 1 and speed = maximum
a = - A ω^2 sin ω t sin = 0 and acceleration = zero
A system is a regularly interacting or interdependent group of units forming an integrated whole. Every system is delineated by its spatial and temporal boundaries, surrounded and influenced by its environment, described by its structure and purpose and expressed in its functioning
Answer:
Measurements most commonly use the International System of Units (SI) as a comparison framework. The system defines seven fundamental units: kilogram, metre, candela, second, ampere, kelvin, and mole.
More work is done when one man lifts the weight using a pulley. Option C is correct.
<h3>What is mechanical advantage ?</h3>
Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of forces in levers and pulley.
It is an effective way of amplify the force in simple machines like lever The theoretical mechanical advantage is defined as the ratio of the force responsible for the useful work in the system to the applied force.
More work is done when one man lifts the weight using a pulley. With the pulley, the mechanical advantage is increasing.
Hence, option C is correct.
To learn more about the mechanical advantage, refer to the link;
brainly.com/question/7638820
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22.3 rad/s
<h3>
Further explanation</h3>
We will solve the question of uniform circular motion.
<u>Given:</u>
- A bicycle has tires of radius
- The bicycle is traveling at a constant speed of
<u>Question:</u>
What angular speed are the tires rotating?
<u>The Process:</u>
Speed, angular speed, and radius are connected in the following formula:
The angular speed is worked out by
All units are in the SI system so let us calculate the angular speed.
Thus the value of the angular velocity of the rotating tire is 
<u>An additional question:</u>
What is the frequency of tire rotation?
Recall this formula: 
We get 
<h3>Learn more</h3>
- Arc CD is ²/₃ of the circumference of a circle. What is the radian measure of the central angle? brainly.com/question/2115496
- A triangle is rotated 90° about the origin brainly.com/question/2992432
- Particle's speed and direction of motion brainly.com/question/2814900
Keywords: a bicycle has tires of radius 0.35 meters. traveling, at a constant speed of 7.8 m/s, at approximately, angular speed, the tires rotating
