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Mcat-review says:
"When something is laying still on an inclined plane, the normal force and friction force adds up in a vector fashion to equal the weight."
How is this true? Let's set up a random inclined plane with angle = 30 degrees. Place a block of 10kg on it.
Friction Force = Component of Gravity downwards = mgsin(30) = 50 N
Normal Force = mgcos(30) = 86 N
Total Weight = mg = 10*10 = 100 N
The sum of frictional force and normal force (50 + 86) is not equal to the total weight.
Am I missing something?
"When something is laying still on an inclined plane, the normal force and friction force adds up in a vector fashion to equal the weight."
How is this true? Let's set up a random inclined plane with angle = 30 degrees. Place a block of 10kg on it.
Friction Force = Component of Gravity downwards = mgsin(30) = 50 N
Normal Force = mgcos(30) = 86 N
Total Weight = mg = 10*10 = 100 N
The sum of frictional force and normal force (50 + 86) is not equal to the total weight.
Am I missing something?