WORK DONE BY SPRING FORCE

When an object is carried at a constant

velocity by a force,

• no work is done on the

  object.

• the work done is maximum on the

  object.

• the work is done minimum on the

  object.

• the work done is 100 % on the

  object.

Tags

NGSS.HS-PS3-2

what is defined as the product of the magnitudes of displacement and the

component of the force parallel to the displacement ?

• work

• energy

• momentum

• power

What is needed to calculate work?

• force

• distance

• time

• mass

If the books is carried by a force which acts at right

angles to the motion, what is the work done?

• work done is maximum

• no work is done on the

  books.

• work done is 90J

• work done is minimum

Tags

NGSS.HS-PS3-2

Which of these items is not part of the law of conservation of energy?

• energy cannot be created

• energy cannot be destroyed

• energy can be transferred between forms

• energy is destroyed by friction

Tags

NGSS.MS-PS3-5

A spring has a spring constant of 330 N/m.  How far is the spring compressed if 150 N of force are used?

• 2.2 m
• 0.0014 m
• 5.0 m
• 0.45 m

Which of the following is a true statement regarding springs?

• The higher the value of the spring constant, the stiffer the spring.  
• In Hooke's law, the force exerted by the spring acts in the same direction as displacement.  
• Springs are designed to provide unpredictable variations in force.  
• The force exerted by a spring has a quadratic relationship with the displacement form equilibrium.  

Stored energy is energy that can be described as:

• A. Energy in motion

• B. Potential Energy

• C. Connected energy

At which point is potential energy greatest?

• W
• X
• Y
• Z

Can energy be destroyed?

• no
• yes