A body constrained to move in y direction is subjected to force given by F-2 i-15 j-6 k- N- What is the work done by this force- in moving the body through a distance of 10m along y-axis-

The correct option is B 150 J Work done =F⃗·r⃗ =( 2î +15ĵ +6k̂ nbsp;) ·( 10 ĵ nbsp;) =150J ...

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Byju's Answer

Standard XII

Physics

Multiplication with Vectors

A body constr...

Question

A body constrained to move in $y$ direction is subjected to force given by $\to F = (- 2 \to i + 15 \to j + 6 \to k) N$ . What is the work done by this force, in moving the body through a distance of $10 m$ along y-axis?

20 J

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150 J

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160 J

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190 J

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Solution

The correct option is B $150 J$
Work done $= \to F \cdot \to r = (- 2^i + 15^j + 6^k) \cdot (10^j) = 150 J$

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A body constrained to move in y direction is subjected to force given by →F=(−2→i+15→j+6→k)N. What is the work done by this force, in moving the body through a distance of 10m along y-axis?

The correct option is B 150JWork done =→F⋅→r=(−2^i+15^j+6^k)⋅(10^j)=150J

A body constrained to move in $y$ direction is subjected to force given by $\to F = (- 2 \to i + 15 \to j + 6 \to k) N$ . What is the work done by this force, in moving the body through a distance of $10 m$ along y-axis?

The correct option is B $150 J$
Work done $= \to F \cdot \to r = (- 2^i + 15^j + 6^k) \cdot (10^j) = 150 J$