WEBVTT

1
00:00:00.000 --> 00:00:07.837
Here is the problem: What is the weight of a 60 kg object on Earth (g equals 9.81 m/s squared)?

2
00:00:08.287 --> 00:00:12.768
Use the weight formula, rearranged for the unknown, in SI units.

3
00:00:13.568 --> 00:00:14.741
Formula: weight.

4
00:00:15.191 --> 00:00:17.130
Substitute the known values.

5
00:00:17.930 --> 00:00:22.829
So the answer is weight W equals 588.6 N.

6
00:00:23.279 --> 00:00:42.470
Weight is the gravitational force on a mass: W equals mg, with g approximately 9.81 m/s squared near Earth prime s surface (1.62 m/s squared on the Moon). Mass in kilograms does not change from place to place; weight in newtons does.

7
00:00:43.270 --> 00:00:48.936
Substituted every value back into the formula: both sides agree, which checks out.