A-Level Maths: R4-18 Forces: Rough Inclined Plane Example 2

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Would we have to draw this type of detailed diagram given the information from scratch in an exam or would it be provided to us?

abdulrahmanfarah
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Hi for the second question I'm a bit confused. I thought you could just add each of the forces together. For example 15N left and 20gsin20N left but then 16N to the right. Which means the tension is 67N? Like think about it, surely a force acting against the other forces counteracts them and therefore tension decreases? I know I'm being stupid here haha.

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