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Ask QuestionPosted by Maheshwar Singh 3 years, 11 months ago
- 2 answers
Posted by Varsha Baboria 3 years, 11 months ago
- 3 answers
Yogita Ingle 3 years, 11 months ago
| Sl. No. | Differentiating Property | Distance | Displacement |
| 1 | Definition | The complete length of the path between any two points is called distance. | Displacement is the direct length between any two points when measured along the minimum path between them. |
| 2 | Denotation | d | s |
| 3 | Direction Consideration | To calculate distance, the direction is not considered. | To calculate displacement, the direction is taken into consideration. |
| 4 | Quantity | Distance is a scalar quantity as it only depends upon the magnitude and not the direction. | Displacement is a vector quantity as it depends upon both magnitude and direction. |
| 5 | Route Information | Distance gives the detailed route information that is followed while travelling from one point to another. | As displacement refers to the shortest path, it does not give complete information on the route. |
| 6 | Formula | Speed × Time | Velocity × Time |
| 7 | Possible Values | The distance can only have positive values. | Displacement can be positive, negative, and even zero. |
| 8 | Indication | Distance is not indicated with an arrow. | Displacement is always indicated with an arrow. |
Posted by Ankit Goswami 3 years, 11 months ago
- 1 answers
Yogita Ingle 3 years, 11 months ago
Let ρ be the density of water, and h be the height of water in cylinder, then thrust at the bottom
F= pressure × area =(hρg)×π2
Thrust on the walls, F'= average pressure × area
F'(ρgh/2)(2πrh)=πrh2ρgF′
When F=F',
then hρg×πr2 = πrh2ρg
or h=r=10cm
Posted by Gshf Gsh 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
Banking of road means raising the outer edge of the road with respect to inner edge so that the road makes an angle with the horizontal.
When a vehicle moves along a curve, the force of friction provides the necessary centripetal force. But this force has a limit = μmg.When the speed of the vehicle increases beyond this maximum value, the banking of roads is necessary so that the component of normal reaction of the road towards the centre provides the necessary centripetal force.
From the figure, for vertical equilibrium :
Total upwards force = total downwards force
Ncosθ=mg+fsinθmg=Ncosθ−fsinθ...(1)
As the forces Nsinθ,fcosθ provide the necessary centripetal force.
rmv2=Nsinθ+fcosθ...(2)
Thus dividing (2) by (1),
mgrmv2=Ncosθ−fsinθNsinθ+fcosθ
As f=μsN
Thus,
rgv2=cosθ−μssinθsinθ+μscosθ=1−μstanθtanθ+μs=1−tanλtanθtanθ+tanλ=tan(θ+λ)
v=rgtan(θ+λ) where tanλ=μ
Posted by Ganisha Verma 3 years, 11 months ago
- 0 answers
Posted by Kajal Yadav 3 years, 11 months ago
- 2 answers
Posted by Hardi J Patel 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
Venturimeter is based on Bernoulli's theorem. It consists of a two truncated tubes connected by a pipe at narrow ends. The pipe connecting the two tubes is called throat as shown in figure.
The venturimeter tube is positioned horizontally and the liquid is made to enter in it at end A and after passing through throat BC, it leaves tube at end D. Let at A, the area of cross-section of tube be a1, pressure of liquid be P1 and velocity be v1 And at the throat, the area of cross-section of tube be a2 pressure of liquid be P2 and velocity be v2
Posted by ?Ritesh Gupta☺️ 3 years, 11 months ago
- 2 answers
Harish Thori 3 years, 11 months ago
Yogita Ingle 3 years, 11 months ago
uniform motion is defined as the motion of an object in which the object travels in a straight line and its velocity remains constant along that line as it covers equal distances in equal intervals of time, irrespective of the duration of the time.
Posted by Hardik Mittal 3 years, 11 months ago
- 3 answers
Yogita Ingle 3 years, 11 months ago
Non- conservative forces are forces which act on a body and the work done on the body by the force is dependent on the path followed. During the motion of a body due to non-conservative force, mechanical energy is dissipated, so we can call the non-conservative forces as dissipative courses.
Gaurav Seth 3 years, 11 months ago
A non-conservative force is the one for which work done depends on the path. For eg, frictional force. Friction does more work on the block if one slides it along the indirect path across the tabletop. The longer the path, the more work friction does.
Posted by Karan Rana 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
187.2 - 63.54 = 123.66
Rounding off to 4 significant digits,
Answer = 123.7
Posted by Śěřãj The Cute? 3 years, 11 months ago
- 5 answers
Posted by सत्य सनातन? 3 years, 11 months ago
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Pratyusha Mishra 3 years, 11 months ago
Posted by Pk✍️ . 3 years, 11 months ago
- 1 answers
Yogita Ingle 3 years, 11 months ago
Density of solid decreases as be increase the temperature. Since mass remains the same but volume increases with increase in temperature that results in decrease in density.
Posted by Radha Yadav 3 years, 11 months ago
- 3 answers
Dhruv .. 3 years, 11 months ago
Posted by Bhima Devi Limbu 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
Carnot engine is a theoretical thermodynamic cycle proposed by Leonard Carnot. It gives the estimate of the maximum possible efficiency that a heat engine during the conversion process of heat into work and conversely, working between two reservoirs, can possess.
It is defined as ratio of net mechanical work done per cycle by the gas to the amount of heat energy absorbed per cycle from the source.
Posted by Akshat Chamoli 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
Moment of inertia plays the same role as is played by mass in translatory motion. In translatory motion, mass is a measure of inertia, therefore, moment of inertia is a measure of rotational inertia in rotatory motion.
Moment of inertia is a measure of how difficult it is to rotate a particular body about a given axis. significance: Greater the mass concentrated away from the axis, greater the moment of inertia.
Posted by Vanee . 3 years, 11 months ago
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Akshat Chamoli 3 years, 11 months ago
Posted by Bhumika Panwar 3 years, 11 months ago
- 2 answers
Raghav Dhir 3 years, 11 months ago
Heena Bilam 3 years, 11 months ago
Posted by Bhima Devi Limbu 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
The viscous force acting on a sphere is directly proportional to the following parameters:
- the radius of the sphere
- coefficient of viscosity
- the velocity of the object
Mathematically, this is represented as
F∝ηarbvc
Now let us evaluate the values of a, b and c.
Substituting the proportionality sign with an equality sign, we get
F=kηarbvc (1)
Here, k is the constant of proportionality which is a numerical value and has no dimensions.
Writing the dimensions of parameters on either side of equation (1), we get
[MLT–2] = [ML–1T–1]a [L]b [LT-1]c
Simplifying the above equation, we get
[MLT–2] = Ma ⋅ L–a+b+c ⋅ T–a–c (2)
According to <a href="https://byjus.com/physics/mechanics/">classical mechanics</a>, mass, length and time are independent entities.
Equating the superscripts of mass, length and time respectively from equation (2), we get
a = 1 (3)
–a + b + c = 1 (4)
–a –c = 2 or a + c = 2 (5)
Substituting (3) in (5), we get
1 + c = 2
c = 1 (6)
Substituting the value of (3) & (6) in (4), we get
–1 + b + 1 = 1
b = 1 (7)
Substituting the value of (3), (6) and (7) in (1), we get
F=kηrv
The value of k for a spherical body was experimentally obtained as 6π
Therefore, the viscous force on a spherical body falling through a liquid is given by the equation
F=6πηrv
Posted by Bhima Devi Limbu 3 years, 11 months ago
- 1 answers
Yogita Ingle 3 years, 11 months ago
According to Stokes law, if a spherical body falls into a viscous liquid then the force acting at the interface is proportional to – Radius of the spherical body, velocity of the sphere, and viscosity of this given fluid.
Posted by Mohit Pahal 3 years, 11 months ago
- 2 answers
Gaurav Seth 3 years, 11 months ago
If a body is taken from the surface of the earth to a point at a height ‘h’ above the surface of the earth, then ri = R and rf = R + h then,
ΔU = GMm [1/R – 1/(R+h)]
ΔU = GMmh/R(R + h)
When, h<<R, then, R + h = R and g = GM/R2.
On substituting this in the above equation we get,
Gravitational Potential Energy ΔU = mgh
Yogita Ingle 3 years, 11 months ago
When a body of mass (m) is moved from infinity to a point inside the gravitational influence of a source mass (M) without accelerating it, the amount of work done in displacing it into the source field is stored in the form of potential energy this is known as gravitational potential energy. It is represented with the symbol Ug.
The equation for gravitational potential energy is:
⇒ GPE = m⋅g⋅h
Where,
- m is the mass in kilograms,
- g is the acceleration due to gravity (9.8 on Earth)
- h is the height above the ground in meters
Posted by Karan Jangir 3 years, 11 months ago
- 4 answers
Gagandeep Kaur 3 years, 11 months ago
Raghav Dhir 3 years, 11 months ago
Ranger King 3 years, 11 months ago
Yogita Ingle 3 years, 11 months ago
Newton’s Law of Universal Gravitation states that every particle attracts every other particle in the universe with a force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Posted by Ranjan Borah 3 years, 11 months ago
- 1 answers
Yogita Ingle 3 years, 11 months ago
The dimensional formula of Velocity is given by,
M0 L1 T-1
Where,
- M = Mass
- L = Length
- T = Time
Posted by Gautam Chouhan 3 years, 11 months ago
- 1 answers
Gaurav Seth 3 years, 11 months ago
Potential energy is defined as the energy stored in an object. Potential energy can be divided into many types; Gravitational potential energy, Elastic Potential energy, Electric Potential Energy etc. Here the gravitational potential energy is defined as the energy possessed by an object by virtue of its position relative to others. Elastic potential energy is defined as the energy possessed by virtue of stresses within its body and an electric potential is defined as the energy possessed by an object by virtue of the total charge stored within.
Potential Energy Formula
The formula for gravitational potential energy is given below.
| PE = mgh |
Where,
- PE is the potential energy of the object in Joules, J
- m is the mass of the object in kg
- g is the acceleration due to gravity in ms-2
- h is the height of the object with respect to the reference point in m.
Posted by Gautam Chouhan 3 years, 11 months ago
- 2 answers
Gagandeep Kaur 3 years, 11 months ago
Gaurav Seth 3 years, 11 months ago
A body can have a constant speed but a changing velocity because the direction can change while the speed is constant. ... However, a body can not have a constant velocity with a changing speed.
For example :
A car can not be slowing down yet still be going the same speed and direction.
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@_ Dreamer 3 years, 11 months ago
1Thank You