4.Decide, whether the statements below are true or false:
1. Wedges are used for splitting close or pushing apart.
2. A nail is a familiar shape of the wedge.
3. A lever looks like a wheel and axle or a pulley.
4. Levers are also used just to change the direction of a motion.
5. In a wheel and screw, the fulcrum is in the center.
6. A lever is a bar with a balance center called the fulcrum.
7. Today we are most familiar with the screw as a fastener but it has numerous other applications.
| T | T | T | T | T | T | T |
| F | F | F | F | F | F | F |