Work Energy Example 1

The video tutorial explains how to apply the work-energy formula for particles, focusing on a block sliding down a circular path and compressing a spring. It defines key positions, velocities, and axes, and discusses the work done by forces, neglecting friction. The tutorial concludes by solving for the maximum spring compression using algebraic manipulation.

What is the main objective of the problem discussed in the video?

• To measure the frictional force acting on the block.

• To find the time taken for the block to reach the spring.

• To determine the maximum compression of the spring.

• To calculate the speed of the block at the bottom of the path.

What is the initial velocity of the block when it is dropped?

• It is equal to the speed of light.

• It is zero because the block is dropped.

• It is a non-zero value because the block is pushed.

• It is equal to the speed of sound.

Why is the final velocity of the block at maximum spring compression zero?

• Because the block is moving upwards.

• Because the block is still moving at maximum speed.

• Because the block has bounced back.

• Because the spring has absorbed all the kinetic energy.

How is the axis chosen for calculating potential energy?

• It is chosen to minimize potential energy.

• It is chosen to maximize potential energy.

• It is chosen to simplify calculations.

• It is chosen randomly.

What is the condition of the spring at the initial position of the block?

• The spring is elongated.

• The spring is partially compressed.

• The spring is fully compressed.

• The spring is not compressed at all.

What principle is demonstrated by the conservation of mechanical energy in this problem?

• The principle of uncertainty.

• The principle of conservation of mechanical energy.

• The principle of conservation of momentum.

• The principle of relativity.

What is the final calculated compression of the spring?

• 3.0 meters

• 2.0 meters

• 0.5 meters

• 1.4 meters