Two particles each of mass m are fixed together by a massless spring. A force f acts on mass
b. At the instant shown a mass a has accelaration a
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Given :
Acceleration of 10kg mass =12m/s²
Force=ma
F=10x12=120N will act .
Net force on 20kg mass will be :
200N-120 N=80N
a=F/m
=80/20
=4m/s²
∴ The acceleration of 20kg mass is 4m/s²
p
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