1 1 The diagram provided shows a fixed pulley system.

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Presentation transcript:

1 1 The diagram provided shows a fixed pulley system. 6.8E: Inclined Planes and Pulleys Force, Motion, and Energy 1 The diagram provided shows a fixed pulley system. A fixed pulley does not change the amount of effort needed to lift the load, but it does change the — A direction of the force. B weight of the load. C volume of the force. D shape of the load. 1

6.8E: Inclined Planes and Pulleys Force, Motion, and Energy 2 The diagram shows a wooden block being pulled up an inclined plane that is 30 cm in height. Using the inclined plane reduces the amount of force needed to lift the block, while increasing the — A mass of the wooden block. B surface area of the block. C pull of gravity on the block. D distance the block must move. 2

6.8E: Inclined Planes and Pulleys Force, Motion, and Energy 3 Which of the following decreases when an object is lifted using a movable pulley? A The distance the object moved B The amount of force needed C The length of the pulley’s rope D The pull of gravity on the object 4 The advantage of using an inclined plane is to reduce the — A force needed to lift the heavy objects. B time needed to load many objects. C work being done while moving objects. D amount of friction affecting the objects. 3

6.8E: Inclined Planes and Pulleys Force, Motion, and Energy 5 The diagram provided shows a 50 N load attached to a movable pulley. What amount of force must act on the left rope of the pulley in order to lift the load? A Less than 25 N B 25 N C 50 N D More than 50 N 4