A = F.s.cos $$\alpha$$

A = F.s.sin $$\alpha$$ .

0⁰

60⁰.

180⁰.

90⁰.

180⁰.

90⁰.

60⁰.

0⁰.

s.

$$H=\frac{W_{hp}}{W_{tp}}$$

$$H=\frac{W_{hp}}{W_{ci}}$$

$$H=\frac{W_{ci}}{W_{tp}}$$

$$H=\frac{W_{ci}}{Whp}$$

Hợp với nhau một góc $$\alpha$$

$$\overrightarrow{p}\ =\ \overrightarrow{F}.m$$

$$\overrightarrow{p}\ =\ \overrightarrow{F}.t$$

$$\overrightarrow{p}\ =\ \frac{\overrightarrow{F}}{m}.$$

$$\overrightarrow{p}\ =\ \frac{\overrightarrow{F}}{t}.$$

$$m.\overrightarrow{v}.$$

$$m_1.\overrightarrow{v_1}\ +\ m_2.\overrightarrow{v_2}.$$

$$m_1.v_1+m_2.v_2.$$

$$v=\frac{s}{t},\ \omega=\frac{\theta}{t},\ \omega=v.r$$

$$v=\frac{\theta}{t},\ \omega=\frac{s}{t},\ \omega=v.r$$

$$v=\frac{\theta}{t},\ \omega=\frac{s}{t},\ v=\omega.r$$

$$v=\frac{s}{t},\ \omega=\frac{\theta}{t},\ v=\omega.r$$

F_ht = m.a_ht.

$$F_{ht}\ =\ m.\omega^2.r$$

$$F_{ht}\ =\ m.r.\omega$$

$$F_{ht}\ =\ \frac{m.v^2}{r}$$

$$f=\frac{2\pi r}{v}$$

$$T=\frac{2\pi r}{v}$$

$$v=\omega r$$

$$\omega=\frac{2\pi}{T}$$

$$\omega=\frac{2\pi}{T},\ \omega=2\pi f$$

$$\omega=2\pi T,\ \omega=2\pi f$$

$$\omega=2\pi T,\ \omega=\frac{2\pi}{f}$$

$$\omega=\frac{2\pi}{T},\ \omega=\frac{2\pi}{f}$$

$$\frac{\pi}{3600}$$ rad/s

$$\frac{\pi}{1800}$$ rad/s

$$\frac{1800}{\pi}$$ rad/s

$$a=\omega r$$

$$\sqrt[]{\omega}=\frac{a}{r}$$

$$\omega=\sqrt[]{\frac{a}{r}}$$

$$a=\omega.r^2$$

N/m².