D. all of the c third dass 13. A lever which has nierum in the middle A first class 3. second class 14. A simple machine used to move an object to a higher place. A. wedge B. wheel and ade Inclined plane 15. Two indined planes together form a A pulley B. gear C wedge D. pulley 16. Which of these is used to draw water from the well? A pulley B lever Cscrew dined 17. The head of an axe is wide at one end and pointed at the other to help out or trimes The is an example of A indined plane A B. wedge C. pulley lever 18. The picture shows a jar with its lld. What kind of simple machine is a jar hay A ramp B. pulley C wedge De screw 19. Why is it easier to draw water from a well using a pulley instead of simply pulling a bucke rope? A. The pulley helps us change the direction of the force. B. The pulley gives us energy to pull up the water. C The water weighs much more when a pulley is used. D. The water is pulled through a shorter distance with a pulley, The transfer of energy that occurs when a force makes an object move effort b. work c. fulcrum de resistance
