from tkinter import *
root = Tk()
root.geometry("400x300")
root.resizable(0, 0)
root.config(bg="#0b376e")
root.title("Newtons para kilogramas")
titulo = Label(text="Newtons para kilogramas",
font=("Arial", "23", "bold"),bg="#0b376e",fg="#1deef5")
titulo.place(relx=0.05, rely=0.05)
texto_sub1 = Label(text="Newtons:",
font=("Arial", "18", "bold"),bg="#0b376e",fg="#1deef5")
texto_sub1.place(relx=0.15, rely=0.35)
Newtons = DoubleVar()
Newtons_entrada = Entry(textvariable=Newtons,
font=("Arial", "12", "bold"),
bg="white", fg="blue", justify='center')
Newtons_entrada.place(relx=0.5, rely=0.35, relwidth=0.4)
def limpar():
Newtons_entrada.delete(0, END)
resultado.set("")
def app():
N = Newtons.get()
aceleracao_gravidade = 9.8
massa_kg = N / aceleracao_gravidade
mensagem =f"A massa correspondente a {N} Newtons é\n aproximadamente {massa_kg:.2f} kg."
resultado.set(mensagem)
but1 = Button(text="Verificar", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.05, rely=0.55, relwidth=0.25, relheight=0.1)
but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.35, rely=0.55, relwidth=0.25, relheight=0.1)
but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.65, rely=0.55, relwidth=0.25, relheight=0.1)
resultado = StringVar()
resultado_texto = Label(textvariable=resultado,
font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.75, relwidth=0.9,relheight=0.2)
root.mainloop()
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