[填空题]
Determine the tangential and centripetal components of the net force ex /b ,,/apuumegerted on a//ugbpum, ,e lij shkv4 9g9-j,l)d- x :smyathe car (by the grms jxsk ,4 h:)lvjy- 9agd9li-ound) in Example 5-8 when its speed is 15$ \mathrm{~m} / \mathrm{s}$ . The car's mass is 1100 kg . F$_{tan}$ = F$_R$ =