What is the density of the rock

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Q. wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 20 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find the time needed for wheel C to reach an angular speed of 100 rev/min, assuming the belt does not slip.

Q. A solid rock, suspended in air by a spring scale, has a measured mass of 9.00 kg. When the rock is submerged in water, the scale reads 4.10 kg. What is the density of the rock? (water density = 1000 kg/m3)

Reference no: EM1350182

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