TLILIC0003 Forklift Stability and the Stability Triangle 2

Question 1

How does raising a load to a greater height affect forklift stability?

Accepted Answer

It reduces stability by raising the combined centre of gravity and increasing tip-over risk

Answer

Raising a load elevates the combined centre of gravity, making the forklift more susceptible to tipping in all directions, which is why loads must be lowered to the travel position before moving.

Question 2

What effect does cornering at excessive speed have on a forklift's lateral stability?

Accepted Answer

It increases dynamic forces, shifting the combined centre of gravity outward and increasing tip-over risk

Answer

Cornering at excessive speed generates centrifugal forces that shift the combined centre of gravity outward toward the edge of the stability triangle, significantly increasing the risk of lateral tip-over.

Question 3

How does operating on an uneven or sloped surface affect forklift stability?

Accepted Answer

It shifts the effective stability triangle and can cause tipping even with a correctly loaded forklift

Answer

Uneven or sloped surfaces tilt the entire forklift, shifting the effective position of the combined centre of gravity relative to the stability triangle and increasing the risk of tip-over.

Question 4

What effect does under-inflation of forklift tyres have on stability?

Accepted Answer

It can cause uneven load bearing, reducing stability and causing premature tyre failure

Answer

Under-inflated tyres cause uneven load bearing across the tyre surface, which reduces the effective support base, increases rolling resistance, and can compromise the forklift's stability triangle.

Question 5

When carrying an asymmetric or off-centre load, what stability risk is increased?

Accepted Answer

Lateral (sideways) tip-over risk, as the combined centre of gravity shifts to one side

Answer

An off-centre load shifts the combined centre of gravity to one side of the forklift, moving it closer to the edge of the stability triangle and increasing the risk of lateral tip-over.

Forklift Licence Practice Test

Forklift Licence Practice Test

TLILIC0003 Forklift Stability and the Stability Triangle 2