2. Solved Papers
  3. Uttarakhand PMT

Uttarakhand PMT Uttarakhand PMT Solved Paper-2005

  • question_answer
    If force \[\vec{F}=4\hat{i}+5\hat{j}\] and displace\[\vec{s}=3\hat{i}+10\hat{k}\] then the work done will be :

    A)  \[4\times 6\]

    B)  \[6\times 3\]

    C)  \[5\times 6\]

    D)  \[4\times 3\]

    Correct Answer: D

    Solution :

     Force \[\overrightarrow{F}=4\hat{i}+5\hat{k}\] Displacement \[\overrightarrow{s}=3\hat{i}+6\hat{k}\] Work done is given by \[W=\overrightarrow{F}\times \overrightarrow{s}=(4i+5j).(3i+6k)\] \[=4\times 3\]


You need to login to perform this action.
You will be redirected in 3 sec spinner