1 31. A knife can be used to split wood into smaller pieces. The blade on a knife is considered to be alan 3. A. Lever B. pulley C. wedge D. wheel and axle 32. Which simple machines turns a Ferris wheel? A. inclined plane C. wedge D. wheel and axle B. pulley 33. What tool would be best used to lift a heavy object, like a refrigerator? A. lever B. screw C. wedge D. wheel and axle 34. What objects uses wheels and axles but also helps us exercise? A. bicycle C. record player B. car D. wagon 35. Mike has load of stones in his wheel barrow and he finds it difficult to lift. What could Mike do to make it easier for him to lift? A Reduce the number of stones in the wheelbarrow. B. Increase the length of the wheelbarrow handle. C. Move the stones closer to the center D. All of the above. 36. Which of the following best explains why lifting a heavy equipment with a single fixed pulley and rope make the task seem easier? A. Less force is needed to lift the object, B. Less work is done when moving the object C. The direction of the force required to lift Cia object is changed. D. The force needed to move the object is applied over a greater distance.​