4 Hooks law

Hooks spring constant K depends on

• Cold weather

• Types of material

• Hot weather

• Changes during summer

Will a weak spring have a big or small constant?

• Big

• small

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.  

According to Hooke's law; Force is equal to -

• Spring Constant × Extension

• Spring Constant ÷ Extension

• Spring Constant + Extension

___________ is the unit of force

• Km

• cm

• m

• N/cm

• N

What equation is used to calculate the elastic force used in changing the objects length?

• F = mg

• F = k x

• F = EQ

• F = PA

The spring constant of an object tells you?

• What type of spring you are dealing with

• How long the spring will stretch or compress

• It gives you a value on how easy or hard it is to change the objects length.

• A spring constant gives you a number which tells you what material the spring is made of.

A scientist is testing the impact of light and dark on moth behavior by turning a light on and off. The INDEPENDENT variable is...

• the moth's reaction

• the amount of light

• the temperature of the room

A scientist is testing the impact of light and dark on the moth behavior by turning a light on and off. The DEPENDENT variable is...

• amount of light

• moth behavior/their reaction

• number of moths

A spring has a spring constant of 5N/cm.  What is its extension when loaded with 15N?

• 4cm
• 5cm
• 3m
• 3cm