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frozen7

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https://www.physicsforums.com/attachment.php?attachmentid=4224&stc=1

The angle between A and horizontal is 60, angle between D and horizontal is 70,angle between BC and horizontal is 30. Mass of P is 2kg.

Find: (a) Tension in AB, BC and CD

(b) Mass of Q.

I have been trying to solve this question by using the following 3 equations but I still can't get the answer: ABsin60 + BCsin30 = 2g

CDsin70 + BCsin30 = m(Q)g

ABcos60 = CDcos70 + BCcos30

Can anyone help me to solve this question? Thanks.

The angle between A and horizontal is 60, angle between D and horizontal is 70,angle between BC and horizontal is 30. Mass of P is 2kg.

Find: (a) Tension in AB, BC and CD

(b) Mass of Q.

I have been trying to solve this question by using the following 3 equations but I still can't get the answer: ABsin60 + BCsin30 = 2g

CDsin70 + BCsin30 = m(Q)g

ABcos60 = CDcos70 + BCcos30

Can anyone help me to solve this question? Thanks.