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If the mass of the Earth is M and its radius is R, the acceleration due to gravity g is:
A piece of iron sinks in water but a huge ship made of iron floats. This is because:
Calculate the pressure exerted at the bottom of a water tank of depth 10m. (density of water = 1000 kg/m^3, g = 10 m/s^2)
Two planets have the same mass, but the radius of planet A is twice that of planet B. The ratio of g_A to g_B is:
A body feels weightless in a satellite orbiting the Earth because:
If the Earth's radius shrinks by 1% while its mass remains constant, the value of 'g' on its surface would:
In a hydraulic machine, the area of the smaller piston is 0.01 m^2 and the larger piston is 1 m^2. If 10 N force is applied to the small piston, the force on the large piston is:
The weight of an object on the surface of Earth is 98 N. What is its mass? (g = 9.8 m/s^2)
What is the effect on upthrust if the density of the liquid increases?
A stone is dropped from a height. After 2 seconds, its velocity will be: (g = 9.8 m/s^2)
Calculate the force of attraction between two bodies of mass 1 kg each separated by 1 meter distance.
When a bus starts suddenly, the passengers tend to fall backwards. This is due to:
If the mass of a planet is 4 times Earth's mass and its radius is 2 times Earth's radius, what is 'g' on that planet?
A body of volume 0.1 m^3 is fully immersed in water. Calculate the upthrust. (density of water = 1000 kg/m^3, g = 10 m/s^2)