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WorksheetsQuiz 6 Understanding Wheel and Axle Mechanics
Total questions: 13
Worksheet time: 7mins
How does the wheel and axle system reduce the amount of force needed to move an object?
By increasing the distance over which the force is applied
By decreasing the distance over which the force is applied
By increasing the speed of the object
By decreasing the speed of the object
A wheel and axle system is used to lift a weight of 200 N. If the radius of the wheel is 0.5 m and the radius of the axle is 0.1 m, and effort is applied at the wheel, what is the mechanical advantage of the system?
2
5
10
20
Explain how the wheel and axle system can be considered a type of lever. Provide reasoning for your explanation.
The wheel and axle system is a lever because it has a fulcrum at the center.
The wheel and axle system is a lever because it allows for rotational motion.
The wheel and axle system is a lever because it uses a rigid bar to lift loads.
The wheel and axle system is a lever because it has an effort arm and a load arm.
If a wheel and axle system has a mechanical advantage of 4, and the input force is 50 N, what is the output force? Effort is applied at the wheel.
12.5 N
50 N
200 N
400 N
A wheel and axle system is used to wind up a flag on a flagpole. Effort applied at wheel. If the radius of the wheel is 0.6 m and the radius of the axle is 0.15 m, what is the mechanical advantage of the system?
2
3
4
5
Discuss the role of friction in the efficiency of a wheel and axle system. How can friction be minimized in such systems?
Friction increases efficiency; it can be minimized by using rough surfaces.
Friction decreases efficiency; it can be minimized by using lubricants.
Friction has no effect on efficiency; it can be minimized by increasing the load.
Friction increases efficiency; it can be minimized by increasing the axle size.
A wheel and axle system is used to lift a 500 N load. If the mechanical advantage is 10, what is the input force required?
5 N
50 N
100 N
500 N
Analyze the impact of increasing the radius of the wheel in a wheel and axle system on the mechanical advantage. Effort is applied at the wheel. Provide a detailed explanation.
Increasing the radius of the wheel decreases the mechanical advantage.
Increasing the radius of the wheel has no effect on the mechanical advantage.
Increasing the radius of the wheel increases the mechanical advantage.
Increasing the radius of the wheel decreases the input force required.
If a wheel and axle system has a wheel radius of 0.8 m and an axle radius of 0.2 m, what is the mechanical advantage? Effort is applied at the wheel.
2
3
4
5
A machine has a wheel radius of 10 cm and an axle radius of 20 cm. Effort is applied at the wheel. What type mechanical advantage does it have?
MA = 1
MA > 1
MA < 1
MA = 0
A wheel and axle system is used to lift a 300 N load. If the input force is 75 N, what is the mechanical advantage of the system?
2
3
4
5
Consider a wheel and axle system where the wheel radius is doubled while keeping the axle radius constant. Effort is applied at the wheel. How does this change affect the mechanical advantage and why?
The mechanical advantage is halved because the input force is doubled.
The mechanical advantage is doubled because the effort arm is increased.
The mechanical advantage remains the same because the axle radius is constant.
The mechanical advantage is reduced because the load arm is decreased.
Which ones of these have a Mechanical Advantage greater than 1 ?
Doorknob
Steering wheel
Ceiling fan with motor
Wind up toy
