Question

When we applied a 5N force a blockof mass m1 moves 10 m/s^2 when we apply same force on anather mass m2 block it moves 20m/s^2. What will be the acceleration if we tie them together and applying same force on them

Answer 1

F=ma
first case
5= m1 ×10
m1= 5/10=0.5 kg

second case
5= m2× 20
m2 = 5/20 = 0.25kg
final case

5 = (0.5 +0.25) a
5 = (0.75) × a
a= 5/0.75
a = 500÷ 75
a = 6.67 m/sec2