Twilight Sparkle from MLP is pulling a box M with a 58 Kg. mass on a horizontal gradient with a 20º angle. On the box it’s Spike with a mass of 10 Kg. as seen on the picture. The inclined plane’s kinetic and stationary frictions are 0.2 and 0.4 respectively, and the coefficient of friction between Spike and the box is unknown. If the box and Spike are moving together in a constant speed of 8.5 m/s, determine:
 
a) The force Twilight is applying on the box.  
b) The reaction force module of the inclined plane on the box.  
c) The range of values of the coefficient of friction between Spike and the box to ensure they always go together.
 
PHEW!!!¡¡¡JODER, LO QUE TIENE QUE HACER UNO POR LA FANBASE, NEN!!!

Twilight was just a bit too eager. She heard math problem and was instantly like…  

MLP’S Twilight Sparkle is pulling a box of 58 kgs of mass through a surface that forms a 20° angle which is perpendicular in respect to the box which Spike is located and oh al carajo no voy a traducir esto reprobé algebra y trigonometría préguntele a RIG o a Tetronimon

@FanOfMostEverything  
Yep, that’s exactly true. You get a cookie.

@JP  
She was so eager to help with the physics problem that she never asked how she’d be helping. Hence her expression.

Spike, renowned № 1 assistant. Helping.

I would laught so loud if that happens in my college.  
Too bad the most I get is stuff like “How to clone the gene of The Force in this plasmid knowing the sequence.”

Odd that they chose Twilight and not Applejack. (It’s a physics problem, something Twilight would enjoy, but she’s doing the pulling, not the mental stuff.)

oh fuqqq, a wild physics/statics problem appears!

I can’t read Spanish, but this seems to be a physics problem presented using Twilight and Spike

Um, what?