A body (not shown) has its center of mass (CM) at the origin. In each case below

Question

A body (not shown) has its center of mass (CM) at the origin. In each case below give the direction for the torque %u03C4 with respect to the CM on the body due to force F acting on the body at a location indicated by the vector r.          Torque is the vector product     of r and F. Use the right hand rule to     determine the direction of the torque.

1) Link to image: http://s21.postimg.org/byjkuq7bn/image.gif

2) Link to image: http://s21.postimg.org/i4pmf7qmr/image.gif

3) Link to image: http://s23.postimg.org/d0fionhx3/image.gif

A body (not shown) has its center of mass (CM) at the origin. In each case below give the direction for the torque %u03C4 with respect to the CM on the body due to force F acting on the body at a location indicated by the vector r. Torque is the vector product of r and F. Use the right hand rule to determine the direction of the torque. Link to image: http://s21.postimg.org/byjkuq7bn/image.gif Link to image: http://s21.postimg.org/i4pmf7qmr/image.gif Link to image: http://s23.postimg.org/d0fionhx3/image.gif

Explanation / Answer

1. r * f if u use right hand rule the curl of fingers will make ur thumb point towards + ve z direction . that is the direction of torque

3. similarly in third case the fingers should point towards the r direction and curl it towards the force , hence ull get the direction of ur thumb in -ve z direction that is the direction of torque

2.. in second case similarly the direction of thumb after applying the same rule shows the direction of torque in -ve x direction i.e inside the paper

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