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Answer the following in a word or two or in a sentence.
Write the relationship between mechanical advantage, load, and effort.
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Answer the following in detail.
Draw simplified diagrams by clearly showing the position of load, effort, and fulcrum for Class I, Class II, and Class III levers.
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Solve the following numerical problem.
The length of the load arm of a lever is 6 m long and the effort arm is 3 m long. What is the effort required to lift a load of 40 N?
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Name the S.I. unit of area and define it.
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How is the unit of square yard related to the S.I. unit of area?
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How is the unit of hectare related to the S.I. unit of area?
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How is the unit of km2 related to the S.I. unit of area?
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How is the unit of cm2 related to the S.I. unit of area?
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How is the unit of mm2 related to the S.I. unit of area?
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State if the following statement is true or false. Correct the statement if it is false.
Area of an object is a fundamental physical quantity.
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Write true or false.
The area can be expressed as the product of length of two sides.
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Select the correct alternative:
The amount of surface occupied by an object is called its __________.
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Explain the term area of a surface.
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Explain how you will measure the area of (i) a square (ii) a leaf?
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Tick the most appropriate answer.
To measure the volume of an irregular shaped body, we use a
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State if the following statement is true or false. Correct the statement if it is false.
The length of an irregular object can be found with the help of a graph paper.
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Find the area of these leaves, where 1 square on the graph paper represents 1 cm2.
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Tick the most appropriate answer.
The region enclosed within the boundaries of a closed figure is known as its
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Solve the following numerical problem.
Grass is to be laid a rectangular field of dimensions 55 m × 45 m. Calculate the area of the field.
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Solve the following numerical problem.
A lawn is in the shape of a square. Find the area covered by the lawn if each of its sides is 50 m.
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