# An artificial satellite… force is 3600 N solved problem

### An artificial satellite revolves round the earth with a relative velocity of 800 m/s. If acceleration due to gravity is 9 m/s2 and gravitational force is 3600 N, calculate its kinetic energy.

An artificial satellite revolves round the earth with a relative velocity of 800 m/s. If acceleration due to gravity is 9 m/s2 and gravitational force is 3600 N, calculate its kinetic energy.

1. A U-tube manometer is connected to a gas pipe. The level of the liquid in the manometer arm open to the atmosphere is 170 mm lower than the level of the liquid in the arm connected to the gas pipe. The liquid in the manometer has specific gravity of 0.8. Find the absolute pressure of the gas if the manometer reads 760 mm of Hg.

2. Estimate the mass of a piston that can be supported by a gas entrapped under the piston in a 200 mm diameter vertical cylinder when a manometer indicates a difference of 117 mm of Hg column for the gas pressure.

3. An artificial satellite revolves round the earth with a relative velocity of 800 m/s. If acceleration due to gravity id 9 m/s2 and gravitational force is 3600 N, calculate its kinetic energy.

4. The specific heat capacity of the system during a certain process is given by

cn = (0.4 + 0.004 T ) kJ/kg °C

If the mass of the gas is 6 kg and its temperature changes from 25°C to 125°C find:

(i) Heat transferred;

(ii) Mean specific heat of the gas.