Most Sought After Biology Notes

Most Sought After Biology Notes

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Tuesday, 13 October 2015

PHYSICS SPECIAL - Original Force as Hypotenuse

Let's revise one of the most simplest concept yet can be confusing - Force Resolution:

QUESTION 1: FIND X


















The key is to make the resultant force (I call it original force) as hypotenuse. Here, 100N is the original force.

ANSWER OUTLINE:



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Let's go for next example:

QUESTION 2: FIND X & Y


















This time, can you find the original force? yup, it's the weight = mg = 100N. Hence, make this 100N as the hypotenuse:















Let's compare this with students' common mistake:

STUDENTS' MISTAKE:















Can you see why this is wrong? yup, because the resultant force is not the hypotenuse. Try to remember that original force is the hypotenuse next time :-)

RESPECTO.

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