Question

a force of 15N gives a mass m1 an acceleration of 3 m/sec² and mass m2 an acceleration of 5 m/sec². what acceleration would it give if both the masses were tied together?

Answer 1

Explanation:

In case 1

force = 15N

acceleration = 3m/s²

f=ma

15=m×3

15/3=m

m=5

in case 2

acceleration=5m/s²

force=15N

f=ma

15=m×5

m=3

combining their masses-

m¹+m²

5+3=8kg

f=ma

15=8×a

15/8 =a

a=15/8

a= 1.875m/s²

Acceleration = 1️⃣.8️⃣7️⃣5️⃣ m/s²