Measuring Forces with Spring Scales

This video tutorial demonstrates the calibration and use of spring scales in the 'Marvelous Machines' unit. It covers how to zero a spring scale and use it to measure force, emphasizing the importance of zeroing all spring scales before testing. The video provides step-by-step instructions for zeroing and using spring scales to measure force by moving a load by hand, both vertically and horizontally. It also highlights the need to record measurements in Newtons and suggests demonstrating the process to students before experiments.

What is the primary focus of the video tutorial?

• Calibrating and using spring scales

• Building simple machines

• Understanding Newton's laws

• Learning about digital engineering

What should be done if the red tab on a spring scale is not at the zero line?

• Use a different measurement tool

• Replace the spring scale

• Adjust the scale for accurate measurements

• Ignore it and proceed

How do you adjust the faceplate of a spring scale if the red tab is above the zero line?

• Tap the faceplate gently

• Rotate the faceplate

• Pull the faceplate outward

• Push the faceplate inward

What is the correct unit for recording spring scale measurements?

• Joules

• Pounds

• Kilograms

• Newtons

When should students measure the force needed to move a load by hand?

• Before using each simple machine

• After using each simple machine

• Only if the load is light

• Only if the load is heavy