Work, Energy And Power

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A force F acting on an object varies with distance x as shown here. The force is in newton and distance is in metre. The work done by the force in moving the object from x = 0 to x = 6 m is

4.5 J

13.5 J

9.0

18.0 J

Solution

13.5 J

The work done will be the area of the F-x graph. Work done in moving the object from x = O to x = 6 m is given by

W = area of rectangle + area of triangle

$= 3 \times 3 + \frac{1}{2} \times 3 \times 3$

W = 9 + 4.5 = 13.5 J

Some More Questions From Work, Energy and Power Chapter

Define the unit joule.

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Define watt.

How many joules are there in one eV?

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By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

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Work, Energy And Power

A force F acting on an object varies with distance x as shown here. The force is in newton and distance is in metre. The work done by the force in moving the object from x = 0 to x = 6 m is

4.5 J

13.5 J

9.0

18.0 J

Some More Questions From Work, Energy and Power Chapter

Define the unit joule.

What are different units of energy?

What is watt?

Define watt.

How many joules are there in one eV?

What is the relation between kWh and Joule?

Does the body at rest possess energy?

By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

A man is rowing upstream and is at rest w.r.t. shore. Is he doing work w.r.t. shore?

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For Daily Free Study Material Join wiredfaculty

Work, Energy And Power

A force F acting on an object varies with distance x as shown here. The force is in newton and distance is in metre. The work done by the force in moving the object from x = 0 to x = 6 m is 4.5 J 13.5 J 9.0 18.0 J

Some More Questions From Work, Energy and Power Chapter

Define the unit joule.

What are different units of energy?

What is watt?

Define watt.

How many joules are there in one eV?

What is the relation between kWh and Joule?

Does the body at rest possess energy?

By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

A man is rowing upstream and is at rest w.r.t. shore. Is he doing work w.r.t. shore?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A force F acting on an object varies with distance x as shown here. The force is in newton and distance is in metre. The work done by the force in moving the object from x = 0 to x = 6 m is

4.5 J

13.5 J

9.0

18.0 J