Chapter 6. Dynamics I: Motion Along a Line
Chapter 6. Dynamics I: Motion Along a Line
Chapter 6. Dynamics I: Motion Along a Line
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Weight and Apparent Weight<br />
Weight – gravitational force - pulls the objects down<br />
r r m - mass of the object (the same on all planets)<br />
w = mg<br />
How can we measure weight?<br />
g<br />
= 9.8 m - free-fall acceleration (different<br />
2<br />
s on different planets)<br />
1. We can measure mass by comparing with<br />
the known mass<br />
m<br />
unknown<br />
=<br />
m<br />
known<br />
2. We can measure the weight by comparing<br />
with the known force<br />
w = F spring<br />
15
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