2 students are talking about the mechanical systems unit. Student A says that complex machines are made up of simple machines and subsystems like linkages. Student B says that simple machines multiply the input force to make it easier to complete a task. Do you agree or disagree with the students? Explain.
I do agree both of the students have solid points
I agree with both Student A and Student B to an extent. Let me explain why.
Student A's statement about complex machines being made up of simple machines and subsystems like linkages is generally correct. In mechanical systems, a complex machine is often composed of multiple simple machines that work together to perform a specific task. Simple machines, such as levers, pulleys, wedges, screws, inclined planes, and wheels and axles, are fundamental components that can be combined and arranged in various ways to create more complex mechanisms. Additionally, subsystems like linkages, which are mechanical systems composed of interconnected links and joints, can be integrated into the overall design to enable certain motions or transformations.
Student B's statement about simple machines multiplying the input force to make tasks easier is also true. Simple machines are designed to provide mechanical advantage, which means they increase the force or change the direction of the force applied to accomplish a task. By utilizing the principles of mechanical advantage, simple machines can reduce the amount of force needed to perform a task by amplifying or redirecting it. This makes it easier for humans to overcome resistance or accomplish tasks that would otherwise be difficult without the mechanical advantage provided by simple machines.
To summarize, complex machines do often consist of simple machines and subsystems like linkages, as Student A stated. And as Student B indicated, simple machines do multiply the input force to make tasks easier. Thus, both students' statements are valid in the context of mechanical systems.