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# A ladder is more apt when you are high up on its rung than when you are just beginning to climb. Why?A. When you are high up, the moment of force tending to rotate the ladder about its base increases, while in the latter case, the moment of force is insufficient to cause slipping.B. When you are high up, the ladder is in unstable equilibrium.C. As you climb up, your potential energy increases.D. When you are high up, the centre of gravity of the system shifts upwards so the ladder is unstable, while in the latter case the system is more stable.

Last updated date: 20th Jun 2024
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Hint:Check all the options given in the question carefully. Check when a person climbs up on the ladder, the forces acting on the system of the person and ladder are balanced or not. Also check whether the increase in potential energy of the person makes the ladder unstable. Also check the effect of change in position of centre of gravity of the ladder or moment of force of the ladder due to the weight of the person on the ladder.

Formula used:
The moment of force or torque $\tau$ acting on an object is given by
$\tau = rF$ …… (1)
Here, $F$ is the force acting on the object and $r$ is the perpendicular force between the point of action of the force and the centre of the torque.