A child’s race track is shown (not to scale) in the figure above. A toy car with a mass of 24.3 g is released from rest at the starting position. In the figure R = 19.1 cm and h = 63.9 cm.
What is the initial gravitational potential energy of the car?
What is the speed of the car at the top of the loop?
What is the magnitude of the acceleration of the car at the top of the loop?
Water (viscosity = 8.90 × 10-4 Pa s, density = 1.00 ×103 kg/m3) flows along the pipe shown in the diagram, the diagram is not to scale. The first pipe (at the top) has a radius, R1 = 0.5460 m and the second pipe (at the bottom) has a radius, r2 = 0.2910 m. Water in the first pipe has a pressure of P1 = 1.175 atm and flows at a speed of v1 = 0.3120 ms-1. The height difference, h, between the two pipes is 10.1 m.
What is the speed of water along the second pipe?
What is the pressure of water in the second pipe?
What is the rate at which the water looses gravitational potential energy?
- This solution has not purchased yet.
- Submitted On 21 Jan, 2015 12:25:48