Notes




Comments

Post a Comment

Popular posts from this blog

Potential energy for near Earth gravity

Image
For small height changes, gravitational potential energy can be computed using U g = m g h , {\displaystyle U_{g}=mgh,} where m is the mass in kg, g is the local gravitational field (9.8 metres per second squared on earth), h is the height above a reference level in metres, and U is the energy in joules. In classical physics, gravity exerts a constant downward force F =(0, 0, F z ) on the center of mass of a body moving near the surface of the Earth. The work of gravity on a body moving along a trajectory r (t) = ( x (t), y (t), z (t)), such as the track of a roller coaster is calculated using its velocity, v =( v x , v y , v z ), to obtain W = ∫ t 1 t 2 F ⋅ v d t = ∫ t 1 t 2 F z v z d t = F z Δ z . {\displaystyle W=\int _{t_{1}}^{t_{2}}{\boldsymbol {F}}\cdot {\boldsymbol {v}}\mathrm {d} t=\int _{t_{1}}^{t_{2}}F_{z}v_{z}\mathrm {d} t=F_{z}\Delta z.} where the integral of the vertical...
Read more

Potential energy

Image
U = ½ · k · x 2(elastic) U = ½ · C · V 2 (electric) U = - m · B (magnetic) In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The unit for energy in the International System of Units (SI) is the joule, which has the symbol J. The term potential energy was introduced by the 19th-century Scottish engineer and physicist William Rankine, although it has links to Greek philosopher Aristotle's concept of potentiality. Potential energy is associated with forces that act on a body in a way that the total work done by these ...
Read more

44)Described: What to expect on Republic Day 2021and what not to

India Republic Day -- Republic Day 2021: In 2020it was the agitation up against the Citizenship Amendment Act (CAA). Nowthousands of farmersmostly from Punjab and Haryanahave been camping at the sides of Delhi for more than 2 monthsdemanding the Centre repeal the three farm laws. For your second year in a short periodRepublic Day celebrations inside national capital will be placed under the shadow of raging protests against laws handed down by the Centre. In 2020it was the agitation up against the Citizenship Amendment Act (CAA). This timethousands of farmersmostly from Punjab and Haryanahave been camping at the sides of Delhi for more than 2 monthsdemanding the Centre repeal the three farm laws. This specific years Republic Day march will also be the first major public event in pandemic occasions. What is new this year The expensive vacation event will be pared down the number of spectatorsthe size of marching contingents and other side points of interest. The spectator size have b...
Read more