[Vectors]Hard Problems Need to solve Immediately with answer please

[parth0009]

[Vectors]Hard Problems... Need to solve Immediately with answer... please... URGENT

Problem 1:

Problem 2:

Problem 3:

Please answer as soon as possible within 3 hours.

 

[rock.freak667]

You need to pose your attempts.

For the first question try putting the forces into vector form.