Question 1 :
A person stands on a weighing machine kept on the floor of an elevator, if the elevator moves down with a constant acceleration, the apparent weight of the person
Question 2 :
Fill in the blank. If a substance's density is less than one then the substance is _________ than reference.<br/>
Question 3 :
When a body is fully immersed in a liquid, the loss of weight of the body is equal to:
Question 5 :
The direction of weight of an object is in .............. direction.
Question 6 :
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 7 :
The force with which the earth attracts a body is called its mass. True or false.
Question 9 :
If the density of a metal is 8.2 g/cc, its relative density is.
Question 10 :
If the mass of a body is M on the surfrace of the earth, then its mass on the surface of the moon will be:<br/>
Question 11 :
State whether given statement is True or False<br/>For a floating object, the buoyant force equals the object's weight.<br/>
Question 12 :
A spring balance and a physical balance are kept in a lift. In these balances equal masses are placed. If now the lift starts moving upwards with constant acceleration, then
Question 13 :
A point mass m is placed inside a spherical shell of radius R and mass M at a distance $R/2$ from the centre of the shell. The gravitational force exerted by the shell on the point mass is?
Question 14 :
An empty tin container with its mouth closed has an average density equal to that of liquid. The container is taken 2 m below the surface of the liquid and Is left there. then the:
Question 15 :
The relative density of an object is $0.3$. Will it float in water?
Question 16 :
Two spherical bodies of mass $M$ and $5M$ and radii $R$ and $2R$ respectively are released in free space with initial separation between their centres equal to $12 R$. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is
Question 17 :
If the mass of a planet is $10\%$ less than that of the earth and the radius is $20\%$ greater than that of the earth, the acceleration due to gravity on the planet will be.
