Spring Force and Hooke's Law

This video tutorial covers the concept of spring force in AP Physics 1, focusing on how springs exert force when stretched or compressed. It explains Hooke's Law, which states that the force exerted by a spring is proportional to its displacement. The video includes an example problem to demonstrate the application of these concepts and introduces the factors of change method for solving related problems. The tutorial concludes with a brief mention of the next topic, tension in strings and cables.

What happens to a spring when it is stretched or compressed?

• It remains in its natural state.

• It becomes permanently deformed.

• It loses its elasticity.

• It exerts a force to return to its natural state.

Which law describes the proportional relationship between the force exerted by a spring and its elongation?

• Pascal's Law

• Hooke's Law

• Coulomb's Law

• Newton's First Law

What does the spring constant (k) indicate about a spring?

• The length of the spring

• The color of the spring

• The weight of the spring

• The stretchiness of the spring

What is the purpose of the negative sign in Hooke's Law equation?

• To indicate the direction of the force

• To represent the weight of the spring

• To denote the color of the spring

• To show the magnitude of the force

In the example problem, what is the unit conversion necessary for calculating the force?

• Inches to feet

• Centimeters to meters

• Grams to kilograms

• Meters to kilometers

If a spring with a constant of 21 N/m is stretched by 3.4 cm, what is the force required?

• 3.570 N

• 2.142 N

• 1.428 N

• 0.714 N

What happens to the elongation of a spring if the applied force is doubled?

• It remains the same.

• It is halved.

• It is doubled.

• It is tripled.

Which method can be used to solve problems involving changes in force and elongation?

• Euler's Method

• Newton's Method

• Lagrange's Method

• Factors of Change

What is the elongation of a spring if the force applied is 1.428 N and the spring constant is 21 N/m?

• 0.102 m

• 0.136 m

• 0.068 m

• 0.034 m

What is the elongation of a spring if the original elongation is 3.4 cm and the force is doubled?

• 13.6 cm

• 3.4 cm

• 6.8 cm

• 10.2 cm