Conservation of Energy Problem with Friction, an Incline and a Spring by Billy

Billy presents a physics problem involving a block compressing a spring and sliding up an incline. The video covers the conversion of units, application of conservation of mechanical energy, and analysis of forces on the incline. The goal is to calculate the maximum height the block reaches on the incline, considering kinetic friction. The solution involves setting up equations, solving for velocity, and using trigonometry to find the height. The video concludes with a summary of the findings.

What is the mass of the block used in the problem?

• 11 grams

• 30 grams

• 14 grams

• 25 grams

What is the spring constant of the spring in the problem?

• 16 N/m

• 12 N/m

• 10 N/m

• 14 N/m

What is the initial compression of the spring in meters?

• 0.052 meters

• 0.042 meters

• 0.032 meters

• 0.062 meters

Which of the following energies is zero at the initial point on the level surface?

• All of the above

• Elastic potential energy

• Gravitational potential energy

• Kinetic energy

What is the direction of the force of kinetic friction on the incline?

• Down the incline

• Perpendicular to the incline

• Parallel to the incline

• Up the incline

What is the calculated acceleration parallel to the incline?

• -3.81315 m/s²

• -5.81315 m/s²

• -6.81315 m/s²

• -4.81315 m/s²

What is the maximum height the block reaches on the incline in centimeters?

• 3.0 cm

• 4.0 cm

• 5.0 cm

• 6.0 cm