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course Phy 201
Mr. Smith I do not understand this assignment very well, if at all possible could you take a few minutes and help me on it thanks again.
`q001. For each of the given objects on the various inclines estimate, based on a sketch as opposed to a formula, the parallel and perpendicular components of the object's weight as a percent of its weight. Use your estimated percents to find the component of each weight parallel to the incline, and perpendicular to the incline.
A car weighing 20 000 Newtons on an incline making angle 12 degrees with horizontal.
90%
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A hotwheels car of weight 80 000 dynes on an incline whose angle with horizontal is 20 degrees.
81%
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A block of weight 30 pounds on a 37 degree incline.
75%
@& Can you describe your sketches for these situations?
Of course you're also welcome to bring your sketches by.*@
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`q002. If the car in the first question experiences a frictional force which is 2% of the perpendicular component of its weight, then what is the magnitude of the frictional force?
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If the car is coasting downhill what is the sum of the parallel component of its weight and the frictional force?
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If the car is coasting uphill what is the sum of the parallel component of its weight and the frictional force?
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`q003. If the hotwheels car in the first question is attached by a light thread to a washer weighing 20 000 dynes and suspended over a pulley at the lower end of the ramp, then if friction is ignored what is the net force acting in the direction down the ramp?
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Answer the same question assuming that the washer is suspended from a pulley at the top of the ramp.
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`q004. How much frictional force would it take to hold he block in the first question stationary on the incline?
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What is this force as a percent of the weight of the block?
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Self-critique (if necessary):
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Self-critique rating:
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@& Check my note. Bring your sketches by, of give me some descriptions.
I do have a workshop I'm required to go to at 1, so if you're coming by try to do so before 1. Good chance I'll be there later, but not for sure.*@