Mechanical Advantage in Action — Important Questions
Kerala Board · Class 10 · Physics
44 important questions from Mechanical Advantage in Action for Kerala Board Class 10 Physics, with answers. Written for the board exams 2027.
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Important Questions from Mechanical Advantage in Action
Which of the following are examples of first-order levers?
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Scissors, Common balance, Seesaw
In first-order levers, the fulcrum is between the load and effort. Scissors, common balance, and seesaw all have the fulcrum in the middle. Bottle opener and nutcracker are second-order levers.
In a wheel and axle system, the wheel radius is 40 cm and axle radius is 8 cm. What is the mechanical advantage?
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5
Mechanical advantage of wheel and axle = Radius of wheel / Radius of axle = 40 cm / 8 cm = 5. The larger wheel provides 5 times mechanical advantage.
An inclined plane is 12 m long and 3 m high. What is its mechanical advantage?
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4
Mechanical advantage of inclined plane = Length / Height = 12 m / 3 m = 4. The inclined plane reduces the required effort by factor of 4.
Which of the following statements about simple machines are correct?
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They can change the magnitude of force, They can change the direction of force, They have no units for mechanical advantage
Simple machines can change force magnitude and direction but cannot create energy or reduce work. Mechanical advantage is a ratio and has no units.
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Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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