A uniform board long and mass rests horizontally on two supports

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

Problem

A uniform board

5.0\,\text{m}

long and mass

20\,\text{kg}

rests horizontally on two supports, one at each end. A

70\,\text{kg}

person stands on the board

1.0\,\text{m}

from the left end. Calculate the upward force exerted by the right support while the system remains at rest. Take

g = 9.8\,\text{m}\,\text{s}^{-2}