Discussion: Based on the data obtained, Figure 1 represents a force vs. time graph for the amount of force that was used to pull a wooden block across a table. As illustrated in Figure 1, the initial flat line in the graph represents the block at rest, this is where the forces acting on the object are the normal force, gravity, and the static frictional force. Force was then applied to the wooden block until it began to move, the point at which the block moves is the peak in Figure 1. This is the point at which there was enough force applied to the block to overcome the maximum static friction force. The graph then begins to decrease because once a force is applied to the object that is greater than the maximum frictional force, not as much force is needed to continue to pull …show more content…
In agreement with preliminary question 3, Figure 1 demonstrates that the force necessary to keep the block sliding is significantly less than the force that is necessary to initiate the slide.
Table 1 represents the mass of the block that was used throughout this experiment, which was found to be 0.467kg. In Table 2, the normal force and peak static frictional force were found for the wooden block alone (Table 1) and when it had 500g or 1000g of additional weight. To calculate the normal force, the weight of the block (including the weights added if applicable) was multiplied by gravity. As shown in Table 2, when no additional weight were added to the block, the normal force was 4.58N and the peak static friction was 1.775N. When 500g of weight was added to the block the normal force was 9.48N and the average peak static friction was 3.688N. Then, when 1000g was added to the block the normal force was 14.38N and the average peak static friction was 5.391N. Figure 2 demonstrates the results of the average peak static friction values vs. the normal force,
In order to begin their outdoor adventure, a skier must first face the forces of static friction. Static friction is the force that keeps the skier at rest. As the skier overcomes the static friction there is a point where the coefficient of friction is greater than that of the kinetic friction that resists the skiers motion. It is clear to see this concept in the figure below.
Today, many health care organizations have been forced to reduce their workforce due to the downturn of the economy. Marshall and Broas (2009) state that whenever health care organizations conduct a reduction in force (RIF); there is the potential for legal risk. However, with proper planning and implementing, employers can minimize the risk of litigation (Marshall & Broas, 2009; Segal, 2001). Hence, before carrying out a 10% reduction in workforce, there are a number of steps that need to be taken to ensure it is successful.
In this report I will discuss different solutions for PVMS to help them improve network communications between the stores and head office, and centralize procedures for recording stock. This report will list the advantage and the disadvantage of each one.
ANSWER: User Configuration can be used in Group Policy to set policies that apply to users, regardless of which computer they log on to. User configuration contains various sub items for:
Two factors contribute to the resistive frictional force; a normal force and the friction coefficient. The normal force is the force holding the person up keeping them from falling towards the center of the earth. On level ground the normal force acts straight up against the acceleration of gravity. On a slope, the normal force is equal to the force of gravity proportional to the cosine of the angle of the slope to horizontal. This portion of gravity attempts to accelerate the person toward the center of the earth, the normal force resists this acceleration. The remaining component of gravity accelerates the body down the hill parallel to the slope, a linear acceleration.
The use of force is a heated topic among many people. What is the “Use of Force Continuum”? It is the level of force an officer can use when arresting or subduing a suspect. According to Hicks (2004), “It is considered morally reprehensible for an officer or a sovereign agent to use excessive force without due necessity. However, once the need arises for a proper escalation of force, both the doctrinal theses of just war and the use of force continuum provide for a proper and morally principled use of necessary force” (pg. 255). The use of force continuum was created to guide officers so they are less likely to use excessive force. The officer is expected to use more force than the suspect, but no so that it is deemed excessive. According to Lyman
Skiing is a sport enjoyed by millions of people around the world. The adrenaline rush that skiers get from flying down the slopes is unmatched, but all too often the cause for this rush is overlooked. Physics plays a crucial role in skiing and without it, there would definitely be no skiing. The concept of skiing is simple. You attach a ski to each foot, go to the top of a hill or incline, and slide down, turning side to side. From this basic concept of sliding down an inclined plane, a worldwide sport has evolved. In this paper, I hope you gain a useful knowledge of the vitally important role that physics plays in the sport of downhill skiing.
In his short story “The Use of Force,” Williams Carlos Williams puts a bad taste in your mouth about how the doctor acts towards the little girl known as Mathilda. He actively grasps her jaw, holds her down, and ends up making her mouth bleed. When people read this story for the first time, they could see the doctor as a cruel person who does not care for the well-being of children, or even that he does not like children and wants to hurt them. However, I believe that the doctor is justified in his actions of force and should be commended for his successful diagnosis.
In the experiment these materials were used in the following ways. A piece of Veneer wood was used as the surface to pull the object over. Placed on top of this was a rectangular wood block weighing 0.148-kg (1.45 N/ 9.80 m/s/s). A string was attached to the wood block and then a loop was made at the end of the string so a Newton scale could be attached to determine the force. The block was placed on the Veneer and drug for about 0.6 m at a constant speed to determine the force needed to pull the block at a constant speed. The force was read off of the Newton scale, this was difficult because the scale was in motion pulling the object. To increase the mass weights were placed on the top of the ...
Contrast the differences between force and torque. Use each term to describe a particular aspect of a muscle’s contraction relative to a joint. (6 pts)
We ran into Newtons First Law, which claims that an object resists change in motion, as the marble rolled down the floor it didn’t stop until it was acted against by friction. As we moved on, Newtons Second Law came into play when we were creating our lever as we need a ball that would roll down with enough acceleration that it could knock down the objects. Newton’s second law claims, that F=MA. So, we choose a golf ball since it would have more mass than a rubber ball, but it would have less acceleration when the lever was started. This way, it would knock the upcoming objects. Newtons Third Law claims that every action yields an equal and opposite reaction. This is proven in our Rube Goldberg Machine when the small car was rolling down the tracks as the wheels pushes against the track making the track move backwards. The track provides an equal and opposite direction by pushing the wheels forward.
Second, the force providing the change in motion is primarily the result of a rapid change in acceleration of the objects involved (assuming the players’ individual masses remain constant.) If we are to a...
Chapter 14 obtain the principle of work and energy by combined the equation of motion in the tangential direction, ƩFt = mat with kinematics equation at ds = v dv. For application, the free body diagram of the particle should be drawn in order to identify the forces that do work. However, Chapter 18 use kinetic energy that the sum of both its rotational and translational kinetic energy and work done by all external forces and couple moments acting on the body as the body moves from its initial to its final position. For application of Chapter 18, a free-body diagram should be drawn in order to account for the work of all of the forces and couple moments that act on the body as it moves along the
• The Use of Force is about a girl who may have Diphtheria, but refuses to open her mouth to let the doctor look at her throat. After much struggle, emotional and physical, the doctor forces her to open her mouth and it turns out she does indeed have the disease.
Gravity keeps our feet on the ground and it keeps us from jumping into space; it sends apples to fall on Isaac Newton’s head, and even though gravity is responsible for keeping the planets in their orbit, gravity still only plays a very small part at the atomic and quantum level.