1. A roofer is dragging a 15.0 kg bundle of shingles up a roof at a constant speed. The roof is sloped at an angle of 30o with respect to the horizontal. a) Draw a free-body diagram of the forces involved b) What is the force component perpendicular to the roof of the weight of the bundles of shingles? show work. C ) What is the magnitude of the force of friction on the bundle of shringles as it is pulled up the roof if the coefficient of kinetic friction of the shingle bundle on the roof is 0.520? Show your work.
1. A roofer is dragging a 15.0 kg bundle of shingles up a roof at a constant speed. The roof is sloped at an angle of 30o with respect to the horizontal.
a) Draw a free-body diagram of the forces involved
b) What is the force component perpendicular to the roof of the weight of the bundles of shingles? show work.
C ) What is the magnitude of the
d)Calculate the force parallel to the roof with which the roofers must pull on the rope to move the shringles at a constant speed up the roof.Answer to 3 significant digits.
e) Suppose an astronaut was building a similar structure on Mars.What would be the force component perpindicular to the roof of the weight of a 15.0 kg bundle of materials on the surface of Mars? The mass of Mars is 6.42x1023kg and the radius of mars is 3.30x106 m. Answer to 3 significant digits.
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