What Are the Key Principles of Static and Dynamic Equilibrium in Physics?

[ladyrachelle]

I.ESSAY QUESTIONS
1.What us the difference between static equilibrium and dynamic equilibrium? Explain your answer fully.

2.State and explain and the conditions for translational equilibrium.

3.What horizontal forces act on a car traveling westward on a level road at a constant speed of 20m/s?Explain your answe fully.

II.WORD PROBLEM(VECTOR DIAGRAMS ARE NEEDED)

1.A 1500-kg car is stationary(not moving) on a ramp that makes an angle of 35(degree) with the horizontal.

a)Draw a vector diagram showing all the forces acting on the car> label and identify(name) all these forces.(note. ineed the vector very importantly.)

b)What is the magnitude of the force parallel to the ramp that keeps the car stationary?(Show complete solution)

2.A child weighing 200 N swings on a rope. If the child is to be held such that the rope is at an angle of 37(degree) with the vertical, what horizontal force must act on the child?

a)Draw a vector diagram showing all the forces acting on the child. Label and identufy(name) all these forces.

b)What is the manitude of the horizontal force acting on the child?(Show complete solution.)


Name of Forces:example:
normal force
frictional
etc.

I have answered the number 3-6 but its taking me a hard time to solve for the 1 and 2...
kindly please help me...
alcazar_edu@yahoo.com
or please post the answer here... I need your help...
please..
Thanks...

 

[Hootenanny]

Welcome to the Forums,

Do you have any thoughts on any of the questions? In addition, I would advise against posting a personal e-mail address on forums, it leaves you exposed to spam and personal attacks via e-mail.

 

[m2003]

Dear student,

I am a scientist and I understand your request for help with your takehome quiz. However, as a scientist, it is important for me to encourage you to think critically and solve problems on your own. I cannot provide you with the answers, but I can guide you in the right direction.

Firstly, for essay questions, it is important to provide a thorough and complete answer. For the first question, you need to explain the difference between static equilibrium and dynamic equilibrium. Static equilibrium refers to a system where all forces acting on an object are balanced, resulting in no movement or acceleration. On the other hand, dynamic equilibrium refers to a system where all forces are balanced, but the object is in motion at a constant velocity. You can provide examples to further illustrate the difference.

For the second question, you need to state and explain the conditions for translational equilibrium. Translational equilibrium occurs when an object is at rest or moving at a constant velocity in a straight line. This happens when the sum of all forces acting on the object in the horizontal and vertical directions is equal to zero. You can also mention the concept of net force and how it relates to translational equilibrium.

Moving on to the third question, you need to identify and explain the horizontal forces acting on a car traveling westward at a constant speed. These forces include the force of friction from the road, the force of air resistance, and the force from the engine of the car. You can explain how each of these forces affects the motion of the car and how they contribute to keeping the car at a constant speed.

For the word problems, it is important to draw vector diagrams to help visualize the forces acting on the objects. For the first problem, you need to draw a vector diagram of a car on a ramp. The forces acting on the car include the normal force, the force of gravity, and the force of friction. You can label and identify these forces on the diagram and then use trigonometry to solve for the magnitude of the force parallel to the ramp that keeps the car stationary.

Similarly, for the second problem, you need to draw a vector diagram of a child swinging on a rope. The forces acting on the child include the child's weight, the tension in the rope, and the force of gravity. You can label and identify these forces on the diagram and then use trigonometry to solve for the magnitude of the horizontal force acting on the child.

I hope this helps