AP EAMCET · PHYSICS · Work Power Energy
A force of \((4 i+2 j+k) \mathrm{N}\) is acting on a particle of mass 2 kg displaces the particle from a position of \((2 \bar{i}+2 \bar{j}+\bar{k}) \mathrm{m}\) to a position of \((4 \bar{i}+3 \bar{j}+2 \bar{k}) m\). The work done by the force on the particle in joules is
- A 21 J
- B 11 J
- C 14 J
- D 18 J
Answer & Solution
Correct Answer
(B) 11 J
Step-by-step Solution
Detailed explanation
\(\overrightarrow{\mathrm{F}}=(4 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\hat{\mathrm{k}}) \mathrm{N}, \mathrm{m}=2 \mathrm{~kg}\) \(\overrightarrow{r_1}=(2 \hat{i}+2 \hat{j}+\hat{k}) m, \overrightarrow{r_2}=(4 \hat{i}+3 \hat{j}+2 \hat{k}) m\)…
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