Question 630: Centre of Mass and Rotational Motion

Question

Find the torque about the origin when a force of 3 $$\hat j$$
 N acts on a particle whose position vector is 2 $$\hat k$$ m.

Accepted Answer

Torque is the moment of Force applied.
$$\overrightarrow 	au   = \overrightarrow r  	imes \overrightarrow F $$
$$\overrightarrow 	au   = 2\hat k 	imes 3\hat j$$
$$\overrightarrow 	au   =  - 6\hat i$$
 Nm

Answer

6 $$\hat j$$
 N m

Answer

$$ - $$
6 $$\hat i$$
 N m

Answer

6 $$\hat k$$
 N m

Answer

6 $$\hat i$$
 N m

Centre of Mass and Rotational Motion

Find the torque about the origin when a force of 3 $\hat j N acts on a particle whose position vector is 2 \hat k$ m.

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