A rod is fixed at one end to a wall so that it lies along the positive -axis

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A rod is fixed at one end to a wall so that it lies along the positive

x

-axis. At the free end,

0.40\,\text{m}

from the wall, a

20\,\text{N}

force is applied in the

xy

-plane making an angle of

30^{\circ}

above the rod (towards positive

y

-direction). Take the

z

-axis coming out of the page towards the observer. Clockwise rotation about the

z

-axis is to be taken as positive. Determine the magnitude and sign of the torque about the wall.