Question

A 5.0 kg mass hangs at the end of a cord. Find the tension in the cord if the acceleration

of the mass is (a)1.5m/s

ଶ downwards (b.) 1.5m/s

ଶ

upwards

Answer 1

a)

$$T=m(g-a)\\T=5(9.8-1.5)=41.5\ N$$

b)

$$T=m(g+a)\\T=5(9.8+1.5)=56.5\ N$$