MHT CET · Physics · Rotational Motion
If \(\vec{F}=(5 \hat{i}-10 \hat{j})\) and \(\vec{r}=(4 \hat{i}-3 \hat{j})\), then the torque acting on the object will be
- A \(\hat{\mathrm{i}}-2 \hat{\mathrm{j}}\)
- B \(2 \hat{\mathrm{i}}-\hat{\mathrm{j}}\)
- C \(25 \hat{\mathrm{k}}\)
- D \(-25 \hat{\mathrm{k}}\)
Answer & Solution
Correct Answer
(D) \(-25 \hat{\mathrm{k}}\)
Step-by-step Solution
Detailed explanation
\(\vec{\tau} = \vec{r} \times \vec{F}\) \(\vec{\tau} = (4 \hat{i}-3 \hat{j}) \times (5 \hat{i}-10 \hat{j})\)
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