Problems seeing the calculator? Click here to refresh the page. Mechanical Advantage: 1. A 200N effort force is applied to a machine to lift a 600N object. What is the MA of the machine?
2. A machine has a mechanical advantage of 0.75. If a 20N force is applied to the machine, what is the output force of the machine?
3. If the effort force is 30N and the load force is 15N, what is the mechanical advantage of the machine?
4. A machine has a mechanical advantage of 4.5. If the machine produced a force of 36N, how much force was applied to the machine?
5. If the mechanical advantage of a machine is 0.7, how much force do you need to apply to a machine to produce 42N? Ideal Mechanical Advantage: 1. A person drives her car up onto a ramp. If she drives a distance of 2.4 m along the ramp to raise the car 0.6 m, what is the ideal mechanical advantage of the ramp?
2. A grocery store owner pushes several grocery carts together up a ramp. The ramp is 3 m long and 2 m high. What is the ideal mechanical advantage of the ramp?
3. The ideal mechanical advantage of a machine is 3.5. If the output distance of the machine is 1.5 m, what is the input distance?
4. When the pedals of a bicycle move through a distance of 0.5 m, the rear wheel of the bicycle moves 3.5 m. What is the ideal mechanical advantage of the bicycle?
5. A crowbar has an ideal mechanical advantage of 2.1. If the input distance of the machine is 42 cm, what is the output distance? Mechanical Efficiency: 1. A student wants to lift a 50N box to a height of 4 metres. When he uses a 16 metre long ramp, he exerts 25N of force on the box. What is the efficiency of this machine rounded to the nearest whole number?
2. A lever is used to lift a 42N box. 23N of force is applied over 8 metres to lift the box 3.5 metres high. What is the percentage of energy wasted rounded to the nearest whole number?
3. A teacher wants to lift a 64N box to a height of 3.2 metres. When he uses a 9 metre long ramp, he exerts 25N of force on the box. What is the efficiency of this machine rounded to the nearest whole number?
4. A lever is used to lift a 84N box. 63N of force is applied over 16 metres to lift the box 8.5 metres high. What is the percentage of energy wasted rounded to the nearest whole number?
5. Why is the efficiency of any machine always less than 100%? Too easy? Try the Challenge Questions.
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Mechanical Advantage:
1. A 200N effort force is applied to a machine to lift a 600N object. What is the MA of the machine?
2. A machine has a mechanical advantage of 0.75. If a 20N force is applied to the machine, what is the output force of the machine?
3. If the effort force is 30N and the load force is 15N, what is the mechanical advantage of the machine?
4. A machine has a mechanical advantage of 4.5. If the machine produced a force of 36N, how much force was applied to the machine?
5. If the mechanical advantage of a machine is 0.7, how much force do you need to apply to a machine to produce 42N?
Ideal Mechanical Advantage:
1. A person drives her car up onto a ramp. If she drives a distance of 2.4 m along the ramp to raise the car 0.6 m, what is the ideal mechanical advantage of the ramp?
2. A grocery store owner pushes several grocery carts together up a ramp. The ramp is 3 m long and 2 m high. What is the ideal mechanical advantage of the ramp?
3. The ideal mechanical advantage of a machine is 3.5. If the output distance of the machine is 1.5 m, what is the input distance?
4. When the pedals of a bicycle move through a distance of 0.5 m, the rear wheel of the bicycle moves 3.5 m. What is the ideal mechanical advantage of the bicycle?
5. A crowbar has an ideal mechanical advantage of 2.1. If the input distance of the machine is 42 cm, what is the output distance?
Mechanical Efficiency:
1. A student wants to lift a 50N box to a height of 4 metres. When he uses a 16 metre long ramp, he exerts 25N of force on the box. What is the efficiency of this machine rounded to the nearest whole number?
2. A lever is used to lift a 42N box. 23N of force is applied over 8 metres to lift the box 3.5 metres high. What is the percentage of energy wasted rounded to the nearest whole number?
3. A teacher wants to lift a 64N box to a height of 3.2 metres. When he uses a 9 metre long ramp, he exerts 25N of force on the box. What is the efficiency of this machine rounded to the nearest whole number?
4. A lever is used to lift a 84N box. 63N of force is applied over 16 metres to lift the box 8.5 metres high. What is the percentage of energy wasted rounded to the nearest whole number?
5. Why is the efficiency of any machine always less than 100%?
Too easy? Try the Challenge Questions.
​Answers
Home Page | Input vs. Output Forces | Mechanical Advantage | Ideal Mechanical Advantage | Mechanical Efficiency | Practice Questions | Challenge Questions | Interactive Quiz | Bibliography