I have created a video on youtube of the chapter mechanical properties of solids and this is quick revision for students who don't want to study everything from the beginning during their exams...by these videos they can finish their revision in 10-15 minutes and directly move on to problem solving..this is very useful for exams as they save a lot of time from this.
I'm discussing in this video about
com of
(a) hollow hemisplere and cone
(b) solid hemisphere and cone
and many more problems
like
1. from a hemisphere of radius r a cone of base radius r/2 and height r is cut as shown in figure. find the height of center of mass of the remaining object.
2. find the centre of mass of anannular half disc shown in figure4.30.
3. find out the centre of mass of a composite object shown in
figure-4.28. object consists of a cone with its base joint with
the base of a hemisphere. the dimensions of the object are
shown in figure. assume uniform density ofthe system, find
the centre of mass of this system.
4. find centre of mass distance from point o of the uniform circular arc shown in figure-4.34
5. find location distance from point o of mass center of a sector of a thin
uniform plate of the shape ofa sector of a circular disc ofradius r as shown in figure-4.35 enclosing an angle Ø at center.
6. from a square plate of side a, quarter circular disc of radius a is removed as shown in figure-4.36. find the coordinates of centre of mass of the remaining part.
I'm discussing in this video about
com of
(a) com of uniform rod
(b) com of semicircular ring
(b) com of arc
(c) com of semicircular disc
and many more problems
like
1. find the center of mass of a rod of length l and having linear mass density 𝝀=𝒂+𝒃𝒙.
2. find the center of mass of a rod of length l and having linear mass density 𝝀=λ_𝒐 (𝟏−𝒙/𝒍).
3. find the center of mass of a right circular ring of radius r and having linear mass density 𝝀=λ_𝒐 𝒄𝒐𝒔(θ).
4. find center of mass distance from point o of the uniform circular arc shown in figure
5. the linear mass density of rod of a length l=2 m varies from a as (𝟐+𝒙) kg/m. what is the position of center of mass from end a.
Resistance in series and parallel combinations and how to identify whether resistances are in series or parallel connection.. easiest way to find out..
What is current? we will discuss about charge, flow of charge, potential, potential difference, resistance, resistivity, resistance in series combination, resistance in parallel combination, ohm's law, current direction.
