A gardener wants to open a heavy swing gate

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A gardener wants to open a heavy swing gate. To rotate the gate about its hinge, she applies a force perpendicular to the gate at a point

1.2\,\text{m}

from the hinge. If the turning moment required to start the motion is

180\,\text{N\,m}

, determine: (i) the minimum magnitude of the force she must apply, (ii) the value of this force expressed in kilogram-force (kgf), taking

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