Question 1 :
<br>Specific gravity usually means relative density with respect to ice. Is the statement True or False
Question 2 :
How much mass (approximately) of a body one can hold, when a force of 1N is applied on it ?
Question 4 :
When an object moves with a constant acceleration, under the influence of force of gravitation of the earth only, the object is said to have:
Question 5 :
A woman weighs 500 N earth. With how much forces her body pulling up on the earth?
Question 8 :
Buoyant force experienced by a solid is _____ the weight of the fluid displaced by it
Question 9 :
The ratio of the value of g in SI units to CGS units is.
Question 10 :
State whether true or false:Weight of an object on the moon is ${\frac{1}{6}}$th of its weight on the earth.
Question 11 :
When an object falls freely to the earth, the gravitational force acting on the body
Question 13 :
A man is standing on a weighing machine placed in a lift. When stationary, his weight is recordedas $40\ kg$. If the lift is accelerated upward with an acceleration of $2\ m/s^{2}$,then the weight recorded inthe machine will be $g = 10\ m/s^{2}$.<br>
Question 14 :
A remote-sensing satellite of earth revolves in a circular orbit at a height of $ 0.25 \times 10^5 $m above the surface of earth . If earth's radius is $ 6.38 \times 10^6 $ m and $ g=9.8\quad  ms^ {-2 }$, then the orbital speed of the satellite is
Question 16 :
Relative density of a substance is expressed by comparing the density of that substance with the density of
Question 17 :
The force acting on a mass of 1 g due to the gravitational pull on the earth is called 1 g wt. One g wt equals
Question 18 :
If $g = 10 m{s}^{-2}$, what is the force of gravity acting on a mass of $1 kg$ ?
Question 20 :
The average value of acceleration due to gravity on the surface of the earth is equal to :
Question 21 :
The weight of a person on Earth is 600 N. His weight on Moon will appear as:
Question 22 :
A rock has a mass of 25 kg on earth.What will be its mass on the moon? (${g_{moon} = I.6\ m/s^2}$)
Question 25 :
Assertion: The weight of an object changes from place to place but not mass.
Reason: The weight of the object is independent of the value of g
Question 26 :
Mass of moon is $7.34\times 10^{22}kg$. If the acceleration due to gravity on the moon is $1.4 ms^{-2}$, the radius of the moon is: $[G=6.667\times 10^{-11} N m^2 kg^{-2}]$
Question 27 :
Fill in the blank. As per Archimedes principle the buoyant force on a submerged object is equal to_______ of liquid displaced by object. <br/>
Question 28 :
State whether given statement is True or False<br/>Because the buoyant force acts in a direction opposite the force of gravity, the net force acting on an object submerged in a fluid, such as water, is smaller than the object's weight.<br/>
Question 29 :
Why does a mug full of water feel lighter inside water?<br>
Question 30 :
The weight of 50 kg person at the surface of earth is ................
Question 31 :
Write true or false for the following statements:<br>The first law of motion is also known as Galileo's law of inertia.
Question 32 :
A solid weighs 32 gf in air and 28.8 gf in water. The relative density of the solid is.
Question 33 :
The diameters of two plantes are in the ration 4:1 and their density in the ration 1:2 The acceleration due to gravity on the planets will be in ratio,
Question 34 :
A cylinder is made up of a material of density $1.5\ g\ cm^{-3}$ is immersed inside a liquid of density $1\ g\ cm^{-3}$. State whether the cylinder moves up or not
Question 36 :
A boat floating in fresh water displaces $16,000\ N$ of water. How many newtons of saltwater would it displace if it floats in saltwater of specific gravity $1.17$?<br>
Question 37 :
If the acceleration due to gravity at the surface of the earth is $g$, the work done in slowly lifting a body of mass $m$ from the earth's surface to a height $R$ equal to the radius of the earth is
Question 38 :
A block of steel of size$5 cm\times 5 cm \times 5 cm$ is weighed in water. If the relative density of steel is 7. its apparent weight is
Question 39 :
If a planet consists of a satellite whose mass and radius were both half that of the earth, then the acceleration due to gravity at the surface of the planet would be
Question 40 :
The radius of earth is about 6400 km and that ofmars is 3200 km. The mass of the earth is 10 times the mass of mars. An object weight 200 N on the surface of earth. Its weight on the surface of marswill be.
