Question

which would be the least likely to sink into a soft ground ?
a. loaded lorry with 6 wheels b.empty lorry with four wheels
c. empty lorry with 6 wheels d.a loaded lorry with four wheels
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Answer 1

Answer:

Object sinks into soft ground when the pressure is more. To decrease pressure increase the area. So wider tyres wonk sinto into the soft ground.

Answer 2

An empty lorry with 6 wheels would be the least likely to sink into a soft ground.

• A lorry produces pressure on the ground and that is why there is a possibility for it to sink if the ground is soft.
• Pressure is the force applied per unit area.
• If there are a large number of wheels, the pressure is divided among them and the net force per area on the ground becomes low.
• A loaded lorry produces more force per unit area than an empty lorry.
• Hence, an empty lorry with 6 wheels will produce less force per unit area on the ground and thereby, will produce less pressure.