Lesson 10/6

Lesson 10/6

Apparent Weight

Open Ended

Journal - How would an elevator affect your weight?

5-minute review

Questions about yesterday's assignment?

Apparent weight

• How are some ways we can change the weight on a scale?

Apparent Weight in an Elevator

Let's look a a quick video over this

Problem-Solving Strategies

• Read the problem carefully and sketch a pictorial model

• Circle the system and choose a coordinate system

• Determine which quantities are known and which are unknown

• Create a physical by drawing a motion diagram showing the direction of acceleration.

• Create a free-body diagram showing all the forces acting on the object.

• Use Newton's Laws to link acceleration and Net force.

• Rearrange the equation to solve for the unknown quantity

Open Ended

Example Problem - Your mass is 75.0 kg, and you are standing on a bathroom scale in an elevator. Starting from rest, the elevator accelerates upward at 2.00 m/s² for 2.00 s and then continues at a constant speed. Is the the scale reading during acceleration greater than, equal t, or less the the scale reading when the elevator is at rest?

Apparent Weight Practice Problems

Open Ended

Exit Ticket - Virtual Students try to find a clothespin, or a paperclip, and some string for tomorrow. What would be your apparent weight if your in an elevator and the cable broke from the top floor and you in free fall?