Recent content by amy84

well on a see saw you can move up if you are heavier to balance it, in this problem you can not, and in a see saw you can not change the pivot point it is stuck to the ground, thanks for you help but just going to bed when you could have just explained the answer a bit better is a bit harsh...

please guys I am begging you ! Just explain this to me i haven't done physics in 7 years! I have read about torque moment arms etc , but my problem is i don't know how to apply it to this question. a previous forum member explain the forces upwards are 700n and 800n which i understand but how...

Homework Statement Hi, Imagine a patient lying down on a bed , you want to weigh her without moving her, but the scale can only support the pair of legs of the bed at one end - or the pair at the other end , but not simultaneously. So he puts the scale at point X (the pairs of bed legs...

okay that sheds new light of the answer, never thought of the forces at X and Y to be upwards, so how does these forces related to the center of gravity? i have looked at examples of say a picture frame being held up being in static equilibrium, so the angles of the foces upwards come into play...

Yes torque is the force vector multiplied by the moment length, so how does this apply here , what are the angles? I much appreciate your time in reading my questing, but could you explain the last question to me so I can make my own deductions or try and figure it out from the worked answer...

thanks for your post I have attached a picture i did on paint which is the same as the one in my question (obviously much worse) Again in the last question i just have no idea about , i mean the force at point Y is 800 how can the answer be 7/15 multiplied by the whole length. i can't...

Homework Statement Hi, Imagine a patient lying down on a bed , you want to weigh her without moving her, but the scale can only support the pair of legs of the bed at one end - or the pair at the other end , but not simultaneously. So he puts the scale at point X (the pairs of bed legs...