1) A spring stretches 5.0cm when a 0.30kg block is hung from it. If a 0.60kg blo

Question

1)  A spring stretches 5.0cm when a 0.30kg block is hung from it. If a 0.60kg block replaces the 0.30kg block, how far does the spring stretch?

DeltaX=________cm

2) How close to the right edge of the 56kg picnic table shown in the figure can a 84kg man stand without the table tipping over?

kgkg

A spring stretches 5.0cm when a 0.30kg block is hung from it. If a 0.60kg block replaces the 0.30kg block, how far does the spring stretch? Delta X = cm How close to the right edge of the 56kg picnic table shown in the figure can a 84kg man stand without the table tipping over?

Explanation / Answer

f=mg=kx

k = mg/x

k=0.3*9.81/0.05 = 58.86N/m

for m=0.6 kg

x = 0.6*9.81/58.86 = 0.1 meter = 10 cm

2)

taking moments about the right edge

84g*x = 0.5*56*g

x= 0.333 meters

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