Motion and Projectiles Homework-Due tommorow
Extended Writing Task: Freefall
Two identical steel balls are released from rest above cylinders containing oil as shown in the diagram below.The balls travel vertically until they reach the bottom of the cylinder. The graph below is the velocity-time graph for steel ball A.
Diagram:
-steel ball A is above cylinder container 1 with oil filled to the top
-steel ball B is above cylinder container 2 which has oil filled to half way
Velocity-time Graph:
in the graph steel ball A has a curved line in which as the time goes on the velocity rate decreases but there is still more velocity with more time but less and less until a certain point where the reaction stops.At the end of the curved line there is a line going downwards.
Describe and explain how the motion of steel balls A and B will differ and why.Your answer should include:
-How the velocity and acceleration of steel ball A and B vary with time
-An account of the forces acting and their sizes
-A sketch of the velocity-time graph that would represent the motion of steel ball B (you may wish to draw this over the graph above)
Continue this task on lined paper writing with good English and attach it behind this sheet.
Write as much as you can.
Please help with the things I have to include as I'm stuck on this question
So
Describe and explain how the motion of steel balls A and B will differ and why.Your answer should include:
-How the velocity and acceleration of steel ball A and B vary with time
-An account of the forces acting and their sizes
-A sketch of the velocity-time graph that would represent the motion of steel ball B (you may wish to draw this over the graph above)
I can tell you the acceleration and velocity of B will the same as A until it hits oil, then acceleration slows to zero or close to zero, and velocity may even come to a cosntant.
Forces: Gravity, and in B, friction.
To describe and explain how the motion of steel balls A and B will differ, we need to consider several factors such as velocity, acceleration, forces acting, and their sizes.
1. Velocity and Acceleration:
In both cases, steel balls A and B are released from rest. This means that initially, both balls start with zero velocity. As time passes, the velocity of both balls will increase due to the force of gravity acting on them. However, the velocity-time graph provided shows that the velocity of steel ball A decreases over time. This indicates that the ball is experiencing a deceleration or a decrease in velocity. On the other hand, we do not have information about the velocity of steel ball B, so we will need to determine it based on other factors.
2. Forces Acting:
The primary force acting on the steel balls is the force of gravity, which is the weight of the balls. This force is directly proportional to the mass of the balls. As steel balls A and B are identical, they have the same mass, and therefore, experience the same force of gravity.
For steel ball A, the presence of oil in cylinder container 1 significantly affects its motion. As the ball travels through the oil, there is a resistive force acting against its motion due to the viscosity of the oil. This resistive force increases with the speed of the ball, causing it to decelerate. Eventually, the resistive force becomes equal in magnitude to the force of gravity, resulting in a terminal velocity, where the ball stops accelerating and reaches a constant velocity.
For steel ball B, which is above cylinder container 2 filled with oil to half its capacity, the resistance from the oil would not be as significant as in the case of steel ball A. Therefore, steel ball B would experience less deceleration and have a higher final velocity compared to steel ball A due to the reduced resistance.
3. Sketch of Velocity-Time Graph (Steel Ball B):
Based on the provided information, we can sketch a velocity-time graph for steel ball B. Since we know that steel ball B experiences less deceleration and reaches a higher final velocity, the graph would show a shallower curve than that of steel ball A. It could resemble a curve that starts from zero velocity and increases gradually, leveling off at a higher constant velocity compared to steel ball A.
Please note that without specific numerical values or more information about the resistance from the oil, it is challenging to provide precise quantitative details about the motion of steel balls A and B. However, this explanation should give you a general understanding of how the motion of the two balls will differ.