Why is it easier to open a door by apply...

Why is it easier to open a door by applying the force at the free end of it.

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ICSE-FORCE -EXERCISE 1A

State one way to reduce the moment of a given force about a given axis...
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State one way to obtain a greater moment of a force about a given axis...
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Why is it easier to open a door by applying the force at the free end ...
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The stone of a hand flour grinder is provided with a handle near its r...
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It is easier to turn the steering wheel of a large diameter than that ...
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A spanner (or wrench) has a long handle. Why?
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A jack screw is provided with a long arm. Explain why?
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A, B and C are three forces each of magnitude 4N acting in the plane o...
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The adjacent diagram Fig 1.27 shows a heavy roller, with its axle at O...
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A body is acted upon by two forces each of magnitude F, but in opposit...
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Draw a neat labelled diagram to show the direction of two forces actin...
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What do you understand by the term couple? State its effect .Give two...
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Define moment of couple. Write its S.I unit.
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Prove that Moment of couple= Force times couple arm
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What do you mean by equilibrium of a body?
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State the condition when a body is in (i) static, (ii) dynamic equilib...
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State two conditions for a body, acted upon by several forces, to be i...
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State the principle of moments, Name one device based on it.
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Describe a simple experiment to verify the principle of moments, if yo...
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Complete the following sentences: (i) The S.I unit of moment of forc...
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