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| 1. |
Figure 5-44 shows an overhead view of a 0.0250 kg lemon half and two of the three horizontal forces that act on it as it is on a fric tionless table. Force vec(F)_(1) has a magnitude of 6.00 N and is at theta_(1)=30.0^(@). Force vec(F)_(2) has a magnitude of 7.00 N and is at theta_(2)=30.0^(@). In unit-vector notation, what is the third force if the lemon half (a) is stationary, (b) has the constant velocity vec(v)=(13.0hati-14.0hatj) m/s, and ( c ) has the varying velocity bar(v)=(13.0t hati-14.0t hatj)" m"//"s"^(2), where t is time? |
| Answer» SOLUTION :(a) `(1.70N)HATI+(3.06N)HATJ,` (B) same, ( C ) `(2.02N)hati+(2.71N)hatj`. | |