springs summary

The video tutorial explains the concept of spring force, which is the force exerted by a spring on a block when stretched. It introduces the formula F = -kx, where F is the spring force, k is the spring stiffness, and x is the displacement from the spring's unstretched length. The negative sign indicates the direction of the force, which opposes the direction of displacement. The tutorial also covers the units of measurement for these variables and provides an example to illustrate the concept.

What happens when a spring is stretched by a distance X?

• The spring force acts on the block.

• The spring force becomes zero.

• The spring force increases the block's speed.

• The spring force decreases the block's mass.

Which of the following is true about the spring force?

• It is equal to the displacement squared.

• It is inversely proportional to the displacement.

• It is directly proportional to the displacement.

• It is independent of the displacement.

What does the spring stiffness constant (K) represent?

• The mass of the spring.

• The length of the spring.

• The type of material of the spring.

• The stiffness of the spring.

Why is there a negative sign in the spring force equation?

• To associate the direction of the force.

• To show the force is constant.

• To make the equation more complex.

• To indicate the force is always positive.

If a block moves to the right, in which direction does the spring force act?

• Downwards.

• Upwards.

• To the left.

• To the right.