The 3.00 kg mass shown below makes a complete circle in 6.00 seconds. The circle

Question

The 3.00 kg mass shown below makes a complete circle in 6.00 seconds. The circle radius is 3.00 m. Find the speed and cord tension (3.14 m/s; 9.87 N) A 1000. Kg car moving at 20. m/s enters a flat corner on the road If the radius of the corner is 50 m. what friction coefficient will be required to make the turn at that speed? (0.82) In a flat corner with 200 m radios, a 1000. kg car barely negotiates a turn If mu-0.800 . how fast is It going? (12 5 m/s) Prove that for the flat corner mu g - v2 / r A student attaches a mass of 3 00 kg to a 1.50 m long string and spins it in a horizontal circle. The string forms an angle of 20.0- with the vertical and looks much like the toy plane discussed in this section draw a force diagram for the mass find the radius of the circle using geometry (0.313m) write force equations find the speed of the mass (1.35 m/s) Prove that for the conical pendulum below that tan theta = v2 / rg

Explanation / Answer

Radius of circle = 1.5sin(20) = 0.513m The right angled triangle is with angles 20, 70 and 90 degrees!

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