Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Sahil Singh 4 years, 1 month ago
- 5 answers
Posted by Har Har Mahadev 🙏 4 years, 1 month ago
- 5 answers
Posted by Har Har Mahadev 🙏 4 years, 1 month ago
- 5 answers
Posted by Ishita Gola 4 years, 1 month ago
- 2 answers
Sneha Sarvaliya 4 years, 1 month ago
Posted by Siddhart Raj 4 years, 1 month ago
- 1 answers
Har Har Mahadev 🙏 4 years, 1 month ago
Posted by Ff Sedn 4 years, 1 month ago
- 0 answers
Posted by Śěřãj The Cute? 4 years, 1 month ago
- 3 answers
Yogita Ingle 4 years, 1 month ago
A parabola is the set of all points in a plane that are equidistant from a fixed line and a fixed point (not on the line) in the plane.
Fixed line is called directrix of parabola
Fxed point F is called the focus.
A line through focus & perpendicular to directrix is called axis .
Point of intersection of parabola with axis is called vertex.
Posted by Har Har Mahadev 🙏 4 years, 1 month ago
- 5 answers
Har Har Mahadev 🙏 4 years, 1 month ago
Yogita Ingle 4 years, 1 month ago
The Graph plotted for the friction and the Force applied on it is attached in the attachment.
From the Attachment, We can see there is a small kink at the top which means after the static friction has been reached a maximum value with the increment in the force applied on it, there is a little decrease in the friction which is just the kink.
Also, we can see that the line is making an angle of 45° with the x-axis. After some time the Force of the friction become constant with the increase in force there is no effect of the Friction, since it became the constant.
Posted by Ff Sedn 4 years, 1 month ago
- 2 answers
Posted by Ff Sedn 4 years, 1 month ago
- 4 answers
Posted by Sahil Singh 4 years, 1 month ago
- 5 answers
Har Har Mahadev 🙏 4 years, 1 month ago
Posted by Sahil Singh 4 years, 1 month ago
- 5 answers
Posted by Har Har Mahadev 🙏 4 years, 1 month ago
- 5 answers
Posted by Lucifer?? Morningstar?? 4 years, 1 month ago
- 1 answers
Yogita Ingle 4 years, 1 month ago
Torricelli’s law
- Torricelli law states that the speed of flow of fluid from an orifice is equal to the speed that it would attain if falling freely for a distance equal to the height of the free surface of the liquid above the orifice.
- Consider any vessel which has an orifice (slit)filled with some fluid.
- The fluid will start flowing through the slit and according to Torricelli law the speed with which the fluid will flow is equal to the speed with which a freely falling bodyattains such that the height from which the body falls is equal to the height of the slit from the free surface of the fluid.
- Let the distance between the free surface and the slit = h
- Velocity with which the fluid flows is equal to the velocity with which a freely falling body attains if it is falling from a height h.
Derivation of the Law:-
- Let A1= area of the slit (it is very small), v1= Velocity with which fluid is flowing out.
- A2=Area of the free surface of the fluid,v2=velocity of the fluid at the free surface.
- From Equation of Continuity, Av=constant.Therefore A1v1 = A2v2.
- From the figure, A2>>>A1, This implies v2<<v1(This meansfluid is at rest on the free surface), Therefore v2~ 0.
- Using Bernoulli’s equation,
- P+ (1/2) ρ v2+ρgh = constant.
- Applying Bernoulli’s equation at the slit:
- Pa+(1/2) ρ v12+ρgy1(Equation 1) where Pa=atmospheric pressure,y1=height of the slit from the base.
- Applying Bernoulli’s equation at the surface:
- P+ρgy2(Equation 2) where as v2=0 therefore (1/2) ρ v12=0, y2=height of the free surface from the base.
- By equating(1) and (2),
- Pa+ (1/2) ρ v12+ ρgy1= P+ρgy2
- (1/2) ρ v12 = (P-Pa) + ρg(y2-y1)
- =(P-Pa) ρgh (where h=(y2-y1))
- v12=2/ρ [(P-Pa) + ρgh]
- Therefore v1=√2/ρ [(P-Pa) + ρgh].This is the velocity by which the fluid will come out of the small slit.
- v1 is known as Speed of Efflux. This means the speed of the fluid outflow.
Torricelli’s law. The speed of efflux, v1,from the side of the container is given bythe application of Bernoulli’s equation.
Case1:- The vessel is not closed it is opento atmosphere that means P=Pa.
- Therefore v1=√2gh.This is the speed of a freely falling body.
- This is accordance to Torricelli’s law which states that the speed by which the fluid is flowing out of a small slit of a container is same as the velocity of a freely falling body.
- Case2:-Tank is not open to atmosphere but P>>Pa.
- Therefore 2gh is ignored as it is very very large, hence v1= √2P/ρ.
- The velocity with which the fluid will come out of the container is determined by the Pressure at the free surface of the fluid alone.
Posted by Har Har Mahadev 🙏 4 years, 1 month ago
- 3 answers
Posted by Ruhi Sagar 3 years, 6 months ago
- 1 answers
Sia ? 3 years, 6 months ago
A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector.
Posted by Sahil Singh 4 years, 1 month ago
- 5 answers
Har Har Mahadev 🙏 4 years, 1 month ago
Har Har Mahadev 🙏 4 years, 1 month ago
Posted by Namit K 4 years, 1 month ago
- 2 answers
Meghna Thapar 4 years, 1 month ago
The work done by a constant force of magnitude F on a point that moves a displacement d in the direction of the force is the product: W = Fd. Integration approach can be used both to calculate work done by a variable force and work done by a constant force. Aside from using the equation, another way to figure out the work being done is to use a force-distance graph. Since work is force multiplied by distance, that means that the area under the force-distance graph gives you the work done. If the force is constant, this means just finding the area of a rectangle.
Posted by Awanish Kumar Maurya 4 years, 1 month ago
- 0 answers
Posted by Sahil Singh 4 years, 1 month ago
- 3 answers
Dhruv .. 4 years, 1 month ago
Posted by Divi Divi 4 years, 1 month ago
- 2 answers
Yogita Ingle 4 years, 1 month ago
Static friction is a force that keeps object at rest. It must be overcome to start moving the object.
Factors on which the static firctional force depends:
1) Force exerted by the body on the surface.
2) Contact surface if they were rough, then friction between their surface is more and vice versa.
Posted by Ff Sedn 4 years, 1 month ago
- 2 answers
Yogita Ingle 4 years, 1 month ago
Supplementary units are the dimensionless units that are used along with the base units to form derived units in the International system. The class of supplementary contains only two purely geometrical units, that is the radian and the steradian.
Posted by Sm .. 4 years, 1 month ago
- 3 answers
Pk ⚔️ 4 years, 1 month ago
Pk ⚔️ 4 years, 1 month ago
Posted by ? S. S. ? 4 years, 1 month ago
- 3 answers
Posted by Aadya Singh 4 years, 1 month ago
- 2 answers
? S. S. ? 4 years, 1 month ago
Posted by Royal Thakur? 4 years, 1 month ago
- 1 answers
Posted by Sahil Singh 4 years, 1 month ago
- 1 answers
Posted by Mamta Singh 4 years, 1 month ago
- 1 answers
Gaurav Seth 4 years, 1 month ago
Answer:
The y component of the force is 2 N.
Explanation:
It is given that,
Force acting on the object, F = 4 N
Angle with the x- axis,
We need to find the y component of the force. The x and y components of the force is as follows :
So, the y component of the force is 2 newton. Hence, this is the required solution.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Har Har Mahadev 🙏 4 years, 1 month ago
0Thank You