Question

answer please I will mark as you brainlist​

Answer 1

Answer: net force on system = 60-10 = 50N toward left

Acceleration of system = 50/(7+2+1) = 5m/s^2

Force by 2kg mass on 1kg mass = N-10= ma

N = 10+1*5 = 15N

Force by 7 kg mass on 2kg mass = N-10 = (1+2)*5

N = 25N

Explanation: