Problem 1 ;
m = 3.5 kg
a = 2.2 m/s²
F = m a
F = 3.5 × 2.2
F = 7.7 kg m/s²
F = 7.7 N
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Problem 2 ;
m = 3 kg
a = 2 m/s²
g = 9.8 m/s²
W = m g = ( 3 kg ) ( 9.8 m/s² ) = 29.4 kg m/s² = 29.4 N
T – W = m a
T – 29.4 = 3 × 2
T – 29.4 = 6
T = 6 + 29.4
T = 35.4 N
I hope I helped you^_^
