A plank has a mass of 5 kg and length of 3 m resting horizontally on two trestles P and Q which are 2.50 apart. When a student of mass 60 kg walks alongside the plank from one trestle to another the plank sags.
Calculate the downward force exerted on each trestle when the student is a distance of 0.50m from trestle p and 1.25 m from trestle p
g= 10 N kg -1
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1
Answer:
The downward force is 9.8×7 N
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6
Answer:
The downward force is 9.8 × 7 .
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