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Ask QuestionPosted by Vedha ..... 5 years, 1 month ago
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Posted by Prmod Ray 5 years, 1 month ago
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Harish Thori 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
The centre of mass of a body or a system of particles is defined as “A single point at which the whole mass of the body or system is imagined to be concentrated and all the applied forces acts at that point.”
Posted by Vedha ..... 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
Let uniform acceleration be a
Acceleration is defined as rate of change of velocity
......................(1)
where v is velocity of an object at time t
By integrating above ewqn.(1) , we get
where u is velocity at time t = 0 and v is velocity after time t seconds
from above integration we get , v - u = a t or v = u + ( a t ) ...................... (2)
velocity is defined as rate of change of displacement
...................(3)
Where S is distance travelled.
By integrating above equation (2) , we get
Where xo is initial position and x is position after time t
x - xo = u t + (1/2) a t2 .................. (4)
If the object travelled a distance S staring from initial velocity u and attained final velocity v after travelling distance S in time t , then we have
S = (1/2) ( u+v ) t ...............(5)
Let us substitute t from eqn.(2) in eqn.(5) as t = [ ( v - u ) / a ] , then we have
S = (1/2) ( u + v ) [ ( v - u ) /a ] or v2 = u2 + ( 2 a S ) .................. (6)
Eqn.(2) , eqn.(4) and eqn.(6) are equations of motion
Posted by Vedha ..... 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
When the ball is thrown vertically upward its velocity decreases as it moves upward due to the gravitational force acting on it downwards and thus the graph slopes downwards with a negative gradient.
When it reaches a certain height, that is at a stationary point, the velocity becomes zero and at this point the graph cuts the x axis.
The ball then comes back with an increasing velocity from zero to its initial position and at this point the graph slopes downwards from the x axis.
Posted by Sathwika Panigrahi 5 years, 1 month ago
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Abirami Kamalbabu 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
The amount of friction that can be applied between two surfaces is limited and if the forces acting on the body are made sufficiently great, the motion will occur. Hence, we can define limiting friction as the maximum value of static friction that comes into play when the body is just at the point of sliding over the surface of another body. Limiting friction is the product of normal force and coefficient of limiting friction. Mathematically, this is represented as
F=muN
Here,mu is the coefficient of limiting friction and N is the normal force
The limiting friction is always opposite to the motion of the object.
Posted by Swati Gaur 5 years, 1 month ago
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Posted by Ankit Verma 5 years, 1 month ago
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Sakshi Pathak 5 years, 1 month ago
Varsha Baboria 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of applied force.
It is measured by the product of the force and the distance moved in the direction of the force, i.e., W = F-S
Posted by Muskan Kanwar 5 years, 1 month ago
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Abirami Kamalbabu 5 years, 1 month ago
Posted by Shifana Sudheer 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
mN means milli newton, 1 mN = {tex}{{10}^{-3}}{/tex} N.
Nm means Newton-metre.
nm means nanometer, 1 nm = {tex}{{10}^{-9}}{/tex} m.
Posted by Diksha Bawa 5 years, 1 month ago
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Sakshi Pathak 5 years, 1 month ago
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Dεερακ Ȿιηɠꜧ 5 years, 1 month ago
5/(10+5) = 1/3 =
0.333333333...... ans
Posted by Aadya Singh 5 years, 1 month ago
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Dεερακ Ȿιηɠꜧ 5 years, 1 month ago
Posted by Tamanna Abbasi 5 years, 1 month ago
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Abirami Kamalbabu 5 years, 1 month ago
Posted by Royal Thakur ? 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics.
Kinematics equations are a set of equations that can derive an unknown aspect of a body’s motion if the other aspects are provided.
These equations link five kinematic variables:
- Displacement (denoted by Δx)
- Initial velocity (v0)
- Final velocity (denoted by v)
- Time interval (denoted by t)
- Constant acceleration (denoted by a)
Posted by Diya Vijay 5 years, 1 month ago
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Sakshi Pathak 5 years, 1 month ago
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