A Quiz On Pulleys! Trivia
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Questions and Answers
- 1.
When a fixed pulley is used to lift a load and the effort is 30N, what is the effort required to lift it using a single movable pulley system?
- A.
5 N
- B.
30 N
- C.
15 N
- D.
300 kg
Correct Answer
C. 15 NExplanation
In a fixed pulley system, the effort required to lift a load is equal to the weight of the load. However, in a single movable pulley system, the effort required is only half of the weight of the load. Therefore, if the effort required in the fixed pulley system is 30N, the effort required in the single movable pulley system would be half of that, which is 15N.Rate this question:
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- 2.
Which pulley system provides only a directional advantage?
- A.
Single fixed
- B.
Single movable
- C.
Single fixed single movable effort going up
- D.
Single fixed single movable effort going down
Correct Answer
A. Single fixedExplanation
A single fixed pulley system provides only a directional advantage. In this system, the pulley is attached to a fixed point, and the effort is applied downwards. The load moves in the same direction as the applied force, making it easier to lift or lower the load. However, the mechanical advantage (force multiplication) is not present in this system, as the effort required is equal to the load being lifted.Rate this question:
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- 3.
What is the direction of pull in a single movable pulley?
Correct Answer
up
effort upExplanation
A single movable pulley changes the direction of the force applied to it. When a force is applied downwards, the pulley redirects it upwards. This means that the direction of pull in a single movable pulley is upwards. Additionally, the effort required to move the pulley is also upwards.Rate this question:
- 4.
What is the distance the effort moved with a single movable pulley lifting a load of 5 cm?
- A.
5 cm
- B.
10 cm
- C.
15 cm
- D.
4.8 N
Correct Answer
B. 10 cmExplanation
A single movable pulley has a mechanical advantage of 2, which means that the effort required to lift the load is half of the load itself. In this case, the load is 5 cm, so the effort required is 2.5 cm. Since the effort moved the load, the distance the effort moved is the same as the effort required, which is 2.5 cm. Therefore, the correct answer is 10 cm.Rate this question:
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- 5.
What is the distance the effort moved with a single fixed, single movable pulley (effort up) lifting a load 5 m?
- A.
5 m
- B.
10 m
- C.
15 m
- D.
20 m
Correct Answer
C. 15 mExplanation
A single fixed, single movable pulley system allows for a mechanical advantage of 2. This means that for every 1 meter the effort is pulled, the load will be lifted by 2 meters. In this case, the load is lifted by 5 meters, so the effort must have moved a distance of 5 meters multiplied by the mechanical advantage of 2, which equals 15 meters. Therefore, the correct answer is 15 m.Rate this question:
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- 6.
Who is your favorite teacher this year?
- A.
Mr. Nicholson
- B.
Mr. N.
- C.
The Grand Pooh Bah
- D.
The CEO of 5N
Correct Answer(s)
A. Mr. Nicholson
B. Mr. N.
C. The Grand Pooh Bah
D. The CEO of 5N -
- 7.
What is a pulley?
Correct Answer(s)
a simple machineExplanation
A pulley is considered a simple machine because it is a mechanical device that helps to reduce the amount of force required to lift heavy objects. It consists of a wheel with a grooved rim and a rope or cable that runs along the groove. By pulling on one end of the rope, the load on the other end can be lifted with less effort. This makes it an effective tool for lifting and moving heavy objects, making work easier and more efficient.Rate this question:
- 8.
What type of pulley system gives the greatest mechanical advantage?
- A.
Single fixed
- B.
Single movable
- C.
Single fixed single movable (effort down)
- D.
Single fixed single movable (effort up)
Correct Answer
D. Single fixed single movable (effort up)Explanation
A single fixed single movable pulley system with the effort applied upwards gives the greatest mechanical advantage. In this type of pulley system, the fixed pulley is attached to a stationary object, while the movable pulley is attached to the load. When the effort is applied upwards, the load is lifted with less force than the effort applied. This system increases the mechanical advantage by distributing the load's weight between the effort and the fixed pulley, making it easier to lift heavy objects.Rate this question:
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- 9.
How many ropes are holding up the load in a single movable pulley?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
B. 2Explanation
In a single movable pulley, the load is held up by two ropes. One end of the rope is attached to the load, while the other end is attached to a fixed point above the pulley. The pulley itself is movable, allowing the load to be lifted or lowered by pulling on the rope. The two ropes work together to distribute the weight of the load and provide mechanical advantage, making it easier to lift heavy objects.Rate this question:
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- 10.
What is the unit is effort measured in?
- A.
N
- B.
Cm
- C.
Newtons
- D.
Kg
Correct Answer(s)
A. N
C. NewtonsExplanation
Effort is measured in units of Newtons (N). Newton is the SI unit of force and is commonly used to quantify the amount of force or effort applied to an object. It is named after Sir Isaac Newton, a renowned physicist who formulated the laws of motion. Therefore, the correct answer is N, which represents Newtons.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Feb 22, 2010Quiz Created by
Boxturtle
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