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

Question

A body constrained to move in y -direction is subjected to a force given by F ⁡ → = - 2 i ⁡ ^ + 15 j ⁡ ^ + 6 k ^ N ⁡ . The work done by this force in moving the body distance of 10 m along the y -axis is, 20 J, 150 J, 160 J, 190 J

MARKS App · Accepted Answer

F ⁡ → = - 2 i ⁡ ^ + 15 j ⁡ ^ + 6 k ^ N ⁡ S ⁡ → = 0 i ⁡ ^ + 10 j ⁡ ^ + 0 k ^ m ⁡ ∴ Work done F ⁡ → · S ⁡ → = - 2 i ⁡ ^ + 15 j ⁡ ^ + 6 k ^ · 0 i ⁡ ^ + 10 j ⁡ ^ + 0 k ^ = 150 J

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