Question 2 :
If density of the earth is doubled keeping its radius constant, then acceleration due to gravity (present value $9.8  m/s^2$) will be:
Question 3 :
Which of the following is/are equations of motion for a body projected vertically upwards.<br/>
Question 5 :
A body falls freely from rest from a certain height. Which of the following is/are true about the body?
Question 6 : <div>The relation connecting acceleration due to gravity and gravitational constant is:</div><br/>
Question 7 :
Motion of a body, thrown vertically upwards, is an example of
Question 8 :
If $g_E$ and $g_M$ are the accelerations due to gravity on the surface of the earth and the moon respectively and if Millikan's oil drop experiment could be performed on the two surfaces, one will find the ratio<br/><br/>$\displaystyle \frac {electronic\  charge\  on\  the\  moon}{electronic\  charge\  on\  the\  earth}$to be
Question 9 :
A cricket ball and a ping-pong ball are dropped from the same height in a vacuum chamber. When they have fallen half way down, they have the same:
Question 10 :
The average density of the earth in terms of $g, G $and $R$ is:<br/>
Question 11 :
The density of newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is It the radius of the plane would be
Question 12 :
The radius of the earth is $R$ and acceleration due to gravity at its surface is '$g$'. If a body of mass '$m$' is sent to a height of $R/4$ from the earth's surface, the potential energy is:
Question 13 :
Assuming the mass of Earth to be ten times the mass of Mars, its radius to be twice the radius of Mars and the acceleration due to gravity on the surface of Earth is $10$ $m/s^2$. Then the acceleration due to gravity on the surface of Mars is given by.
Question 14 :
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 15 :
The mass of the moon is 1% of mass of the earth.The ratio of gravitational pull of earth on moon to that of moon on earth will be:
Question 17 :
The moon's radius is 1/4 that of the earth and its mass 1/80 times that of the earth. If g represents the acceleration due to gravity on the surface of the earth, then on the surface of the moon its value is:
Question 18 :
Mass $m$ units is divided in two parts X and $(1-X).$ For a given separation the value of $X$ for which the gravitational force between them becomes maximum is :
Question 19 :
With what minimum acceleration can a fireman slide down a rope whose breaking strength is two third of his weight?
Question 21 :
If $F_{g}$ and $F_{e}$ are gravitational and electrostatic forces between two electrons at a distance $0.1$ $m$ then $F_{g} / F_{e}$ is in the order of :<br/>
Question 23 :
A mass $M$ is lowered with the help of a string by a distance $x$ at a constant acceleration $g/2$. The work done by the string will be
Question 24 :
Assertion: If earth suddenly stops rotating about its axis, then the value of acceleration due to gravity will become same at all the places.
Reason: The value of acceleration due to gravity is independent of rotation of earth.
Question 25 :
A body weight $72\ N$ on the surface of the earth. What is the gravitational force acting on it due to the earth at a height equal to half the radius of the earth from the surface?
Question 26 :
If the acceleration due to gravity, $g$, is $10m/s^2$ at the surface of the earth (radius $6400km$), then at a height of $1600km$ the value of $g$ will be? (in $m/s^2$)
Question 27 :
A man of weight mg is moving upwards in a rocket with acceleration $4$g. His apparent weight in side the rocket will be?
Question 28 :
A player throws a ball vertically upwards with velocity u. At highest point,
Question 29 :
Two balls are dropped from the same height from places $A$ and $B$. The body at $B$ takes two seconds less to reach the ground at $B$ strikes the ground with a velocity greater than at $A$ by $10 m/s$. The product of the acceleration due to gravity at the two places $A$ and $B$ is:
Question 30 :
At what height $'h'$ from the earth surface, acceleration due to gravity becomes half as that of acceleration due to gravity on the surface of earth.<br>[$R$ = Radius of earth]
Question 31 :
A spherical planet, far out in space, has a mass $M_0$ and diameter $D_0$. A particle of mass $m$ falling freely near the surface of this planet will experience acceleration due to gravity which is equal to:
Question 32 :
Assertion: Acceleration due to gravity at a place on earth remains constant for all objects
Reason: Acceleration due to gravity doesn't depend on the mass of the object but only on mass of earth
Question 33 :
Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.
Question 35 :
Calculate the distance traveled by a body dropped from rest in $0.1\ s$. Take $g=10\ Nkg^{-1}$
Question 36 :
Planets A and B have same average density. Radius of A is twice that of B The ratio of acceleration due to gravity on the surface of A and B is
Question 37 :
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.
Question 38 :
A cavity of radius $R/2$ is made inside a solid sphere of radius $R$. The centre of the cavity is located at a distance $R/2$ from the centre of the sphere. The gravitational force on a particle of mass $m$ at a distance $R/2$ from the centre of the sphere on the line joining both the centres of the sphere and the cavity is (opposite to the centre of the cavity)<br>[Here $g=(GM)/{R}^{2}$, where $M$ is the mass of the sphere]<br>
Question 39 :
If rope of lift breaks suddenly, the tension exerted by the surface of lift (a=acceleration of lift)
Question 40 :
A planet has twice the density of earth but the acceleration due to gravity on its surface is exactly the same as on the surface of earth. Its radius in terms of earth's radius $R$ will be<br>
Question 41 :
A planet has mass and radius  both half of earth. Acceleration due to gravity (g) at its surface should be <br/>                      
Question 42 : Who among the following gave first the experimental value of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e914b1b88bd895386ecf805">
Question 43 :
What is value of gravitational acceleration at the center of the earth ?
Question 44 :
Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velocity will depend on which of the following factors : <br> I. Mass of the planet <br> II. Mass of the particle escaping <br> III. Temperature of the planet <br> IV. Radius of the planet <br> Select the correct answer from the codes given below :
