Springs

An ideal spring with a constant of 200 N/m is acted upon by a 500 N force directed in the positive direction.  What is the magnitude and direction of the displacement?

• 0.4 m
• -0.4 m
• 1.5 m
• -1.5 m

A force of 200 N causes a displacement with a magnitude of 0.5 m.  What is the constant of the spring?

• 100 N/m
• 200 N/m
• 400 N/m
• 800 N/m

Tags

CCSS.8.EE.C.7B

This spring has a constant of 80 N/m.  What is the magnitude of the force being applied?  The dotted green line represents the spring's equilibrium position and the green vector is displacement.

• 20 N
• 80 N
• 160 N
• 320 N

Tags

NGSS.HS-PS2-1

This spring has a constant of 80 N/m.  What is the elastic potential energy stored in the spring?  The dotted green line represents the spring's equilibrium position and the green vector is displacement.

• Energy is conserved, it cannot be stored.
• 5 N
• 20 N
• 40 N

In which direction is the pictured spring's restoring force acting?

• To the right.
• To the left.
• There is no restoring force.
• Both left and right.

In the equation for Hooke's Law, what does the minus sign indicate?

• It indicates that the restoring force acts in the same direction as the displacement.
• It indicates that the restoring force acts in the opposite direction as the displacement.
• Mechanical energy in the system decreases as the oscillations increase.
• That when displacement is in the positive direction, energy will be negative.

Which of the following is a system where elastic potential energy is being stored?

• A bowling ball is left on a trampoline.
• A basketball is thrown through the air.
• An entire spring is dropped off the top of a building and falls toward the earth.
• A frictionless skateboard oscillates back and forth on a frictionless ramp.

Which position shows the spring with minimum elastic potential energy?

• A
• B
• C
• D

Which position shows the spring with maximum elastic potential energy?

• A
• B
• C
• D

A stiff ideal spring has a:

• high spring constant
• low spring constant
• a varying spring constant depending on displacement
• spring constant which is difficult to predict