MECHANISMS TEST VELES1Version en ligne MECHANISMS TEST par Rafael Escribano 1 A ROWING IS AN EXAMPLE OF a A SECOND CLASS LEVER b A PULLEY c A THIRD CLASS LEVER d A FIRST CLASS LEVER 2 Which force you will have to make to lift a bucket of water of 20 Newtons with a pulley a 10 Newtons regardless of the type of pulley b 10 Newtons if we use a fixed pulley c 20 Newtons if we use a movable pulley d 20 Newton if we use a fixed pulley 3 This lever a is balanced b turns clockwise c turns anti clockwise 4 A class 2 lever allows us to a Make less effort to lift a load b Make more effort to lift a load c Make the same effort to lift a load 5 In which case do you have to make less force to lift the resistance a A b B c C d B AND C 6 How much does the elephant weigh if the cat weighs 3Kg a 2500 Kg b 3500 Kg c 4000 Kg d 3750 Kg 7 The mechanical advantage of this lever is a 4 b 3 c 2 d There is no mechanical advantage 8 The unknown mass to balanced the lever is a 70g b 50g c 35g d 65g 9 In which mechanism you always get mechanical advantage? a Class 1 lever b Class 3 lever c Fixed pulley d Movable pulley 10 The unknown mass to balance the lever is a 50g b 75g c 60g d None of them 11 In a class 3 lever, When is the force lower than the resistance ? a Always b Never c It depends on the resistance arm d It depends on the force arm 12 What happens in this lever a The lever is balanced b turns clockwise c turns anti clockwise d None of the earlier answers 13 Which class of lever is this image a class 1 b class 2 c class 3 d class4
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