Dynamics inclined plane

sunny1982

New Member
Hey folks
I wanted to trouble you a bit this is a bit more physics than electronics but I've been on here before and you wonderful folks have helped me what it is I am stuck on question 1.3 and 1.4 but I think after cracking question 1.3 I'll have a grasp of question 1.4 so please if there is anyone who could point me to the right direction all help will be greatly appreciated once again I do understand this is a electronics forum but I know there are people on here who are more than capable of helping me.
 

Attachments

I am stuck on question 1.3
I'm not surprised. The equation is incomplete!
 
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