Unformatted text preview: . 47 and kinetic Friction between the block with mass 7 . 5 kg and the horizontal surFace is . 33 . The acceleration oF gravity is 9 . 8 m / s 2 . 7 . 5 kg . 2 kg F 9 8 m = 0 47 μ = 0 . 33 What is the minimum Force F which must be exerted on the 7 . 5 kg block in order that the 0 . 2 kg block does not to Fall? Answer in units oF N. 005 10.0 points A highspeed test track For cars has a curved section — an arc oF a circle oF radius R = 762 m. The curved section is banked at angle θ = 12 . 1 ◦ From the horizontal to help the cars to stay in the road while moving at high speeds. The acceleration oF gravity is 9 . 8 m / s 2 . r SIDE VIEW TOP VIEW θ One day, oil spills on the track making a Few meters oF the curved section Frictionless. Calculate the speed v oF a car which can cross the oil spill oF the curve without slipping sideways. Answer in units oF m / s....
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 Winter '08
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 Physics, mechanics, Force, Friction, Mass, Normal Force, kg

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