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

F = ( 2î + 15ĵ + 6k̂) N d = 10ĵ m W = F . d = 0 + 150 + 0 = 150 J ...

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Standard XII

Physics

Multiplication with Vectors

A body constr...

Question

A body constrained to move in the y - direction is subjected to a force given by $\to F = (- 2^i + 15^j + 6^k) N .$ What is the work done by this force in moving the body a distance of $10 m$ of along the 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 $150 J$
$\to F = (- 2^i + 15^j + 6^k) N$
$\to d = 10^j m$
$W = \to F . \to d$
$= 0 + 150 + 0$
$= 150 J$

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

The correct option is B 150 J→F=(−2^i+15^j+6^k)N →d=10^j m W=→F.→d =0+150+0 =150 J

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

The correct option is B $150 J$
$\to F = (- 2^i + 15^j + 6^k) N$
$\to d = 10^j m$
$W = \to F . \to d$
$= 0 + 150 + 0$
$= 150 J$