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| Both sides previous revision Previous revision Next revision | Previous revision | ||
| 183_notes:examples:holding_block_against_a_wall [2014/09/22 04:14] – pwirving | 183_notes:examples:holding_block_against_a_wall [2014/09/22 04:16] (current) – pwirving | ||
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| Line 42: | Line 42: | ||
| $ (F_{hand} - F_N) \Delta t = 0 $ | $ (F_{hand} - F_N) \Delta t = 0 $ | ||
| - | $ F_{hand} \Delta t - F_N \Delta t = 0 $ Multiply out. | + | $ F_{hand} \Delta t - F_N \Delta t = 0 |
| - | $ F_{hand} \Delta t = F_N \Delta t $ Make equal to each other. | + | $ F_{hand} \Delta t = F_N \Delta t |
| - | $ F_{hand} = F_N $ Cancel | + | $ F_{hand} = F_N |
| Substituting in we get: | Substituting in we get: | ||