A trolley weighing 200 kg moves with an acceleration of 4 m / s2. With what force does the worker push the trolley

A trolley weighing 200 kg moves with an acceleration of 4 m / s2. With what force does the worker push the trolley if the coefficient of friction is 0.6?

Condition:
m = 200 kg
a = 4 m / s ^ 2
μ = 0.6
To find :
F-? H
Decision :
2 Newton’s law – the resultant of all forces is ma.
F-F friction = m * a.
F = m * a + F friction.
F = m * a + μ * m * g.
F = 200 * 4 + 0.6 * 200 * 10 = 800 + 1200 = 2000 (N)
Answer: 2000 N.