Analyzing Forces in an Elevator: Balancing Forces and Free Body Diagrams

The video tutorial explains how to solve a worksheet problem involving net force and force diagrams. It covers the concept of constant velocity, balanced forces, and how to draw a free body diagram. The tutorial also includes calculations for the force exerted on a passenger in an elevator moving at constant velocity and then accelerating. Key formulas such as net force, mass times acceleration, and gravitational force are discussed, with step-by-step calculations provided.

What is the significance of an elevator moving at a constant velocity in terms of forces?

• The gravitational force is greater than the normal force.

• The forces are balanced.

• The forces are unbalanced.

• The normal force is greater than the gravitational force.

In a free body diagram for a passenger in an elevator moving at constant velocity, what should be true about the forces?

• The forces going up are equal to the forces going down.

• There are no forces acting on the passenger.

• The forces going up are greater than the forces going down.

• The forces going down are greater than the forces going up.

Which formula represents the net force in terms of mass and acceleration?

• F_net = mass / acceleration

• F_net = mass * acceleration

• F_net = mass - acceleration

• F_net = mass + acceleration

What is the value of gravitational acceleration used in the calculations?

• 9.8 meters per second squared

• 10.5 meters per second squared

• 10 meters per second squared

• 9.6 meters per second squared

How is the normal force related to the gravitational force when the elevator moves at constant velocity?

• Normal force is greater than gravitational force.

• Normal force is less than gravitational force.

• Normal force is not related to gravitational force.

• Normal force is equal to gravitational force.

What is the calculated normal force exerted by the floor on the passenger when the elevator moves at constant velocity?

• 1050 Newtons

• 950 Newtons

• 850 Newtons

• 750 Newtons

When the elevator accelerates upward, which force becomes greater?

• Normal force

• Gravitational force

• Tension force

• Frictional force

What is the net force equation when the elevator accelerates upward?

• Net force = gravitational force + normal force

• Net force = normal force + gravitational force

• Net force = normal force - gravitational force

• Net force = gravitational force - normal force

What is the acceleration of the elevator when it moves upward?

• 1 meter per second squared

• 2 meters per second squared

• 3 meters per second squared

• 4 meters per second squared

What is the final calculated normal force when the elevator accelerates upward?

• 1000 Newtons

• 1020 Newtons

• 1100 Newtons

• 900 Newtons