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Look at the drawing given in the figure which has been drawn with ink of uniform line-thickness. The mass of ink used to draw each of the two inner circles, and each of the two line segments is m. The mass of the ink used to draw the outer circle is 6 m. The coordinates of the centres of the different parts are: outer cicle (0,0), left circle (-a, a), right inner circle (a,a), vertical line (0,0) and horizontal line (0 ,-a). The y-coordinate of the centre of mass of the ink in this drawing is
22
Sep
Look at the drawing given in the figure which has been drawn with ink of uniform line-thickness. The mass of ink used to draw each of the two inner circles, and each of the two line segments is m. The mass of the ink used to draw the outer circle is 6 m. The coordinates [...]
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-a). The y-coordinate of the centre of mass of the ink in this drawing is ,
0 ) ,
0) and horizontal line (0 ,
A) ,
and each of the two line segments is m. The mass of the ink used to draw the outer circle is 6 m. The coordinates of the centres of the different parts are: outer cicle (0 ,
left circle (-a ,
Look at the drawing given in the figure which has been drawn with ink of uniform line-thickness. The mass of ink used to draw each of the two inner circles ,
right inner circle (a ,
vertical line (0 ,
At what height h above the earth’s surface the value of g becomes g/2 ? ( where R is the radius of the earth )
22
Sep
At what height h above the earth’s surface the value of g becomes g/2 ? ( where R is the radius of the earth ) At what height h above the earth's surface the value of g becomes g/2 ? ( where R is the radius of the earth ) September 22, 2020 Category: Chapter [...]
Distance of the centre of mass of a solid uniform cone from its vertex is Zo. If the radius of its base is R and its height is h then Zo is equal to
22
Sep
Distance of the centre of mass of a solid uniform cone from its vertex is Zo. If the radius of its base is R and its height is h then Zo is equal to Distance of the centre of mass of a solid uniform cone from its vertex is Zo. If the radius of its [...]
Two point masses A and B having masses in the ratio 4 : 3 are separated by a distance of 1 m. When another point mass c of mass M is placed in between A and B the forces A and C is (1 / 3rd) of the force between B and C, Then the distance C from A is
22
Sep
Two point masses A and B having masses in the ratio 4 : 3 are separated by a distance of 1 m. When another point mass c of mass M is placed in between A and B the forces A and C is (1 / 3rd) of the force between B and C, Then the [...]
Three identical particles are placed on a horizontal smooth table, connected with strings as shown. The particle B is imparted a velocity V0 = 9 m/s in horizontal direction perpendicular to the line ABC. Find speed of particle A when it is about to collide with C.Three identical particles are placed on a horizontal smooth table, connected with strings as shown. The particle B is imparted a velocity V0 = 9 m/s in horizontal direction perpendicular to the line ABC. Find speed of particle A when it is about to collide with C.
22
Sep
Three identical particles are placed on a horizontal smooth table, connected with strings as shown. The particle B is imparted a velocity V0 = 9 m/s in horizontal direction perpendicular to the line ABC. Find speed of particle A when it is about to collide with C.Three identical particles are placed on a horizontal smooth [...]
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A railway flat car ,
moves at a speed V. The gun barrel makes an angle α = 60∘ with the horizontal. A shell of mass m leaves the barrel at a speed v = 12 m/s ,
relative to the barrel. Find the speed of the flat car V (in m/s) in order that it may stop after the firing. ,
Three identical particles are placed on a horizontal smooth table ,
whose mass together with the artillery gun is M = 2 m ,
The mean distance of Mars from the sun in 1.5 times that of the Earth from the sun. What is approximately the number of years requires for Mars make one revolution about the Sun.
22
Sep
The mean distance of Mars from the sun in 1.5 times that of the Earth from the sun. What is approximately the number of years requires for Mars make one revolution about the Sun. The mean distance of Mars from the sun in 1.5 times that of the Earth from the sun. What is approximately [...]
A system of binary stars of masses MA and MB are moving in circular orbits of radii RA and RB respectively. If TA and TB are the time periods of masses MA and MB respectively, then
22
Sep
A system of binary stars of masses MA and MB are moving in circular orbits of radii RA and RB respectively. If TA and TB are the time periods of masses MA and MB respectively, then A system of binary stars of masses MA and MB are moving in circular orbits of radii RA and [...]
Two blocks of masses m = 2 kg and m= 8 kg are connected to a spring of force constant K = 1 k N/m. The spring is compressed by 20 cm and the two blocks are held in this position by a string. The system is placed on a horizontal smooth surface and given a velocity u=3 m/s perpendicular to the spring. The string snaps while moving. Find the speed of the block of mass m when the spring regains its natural length.
22
Sep
Two blocks of masses m = 2 kg and m= 8 kg are connected to a spring of force constant K = 1 k N/m. The spring is compressed by 20 cm and the two blocks are held in this position by a string. The system is placed on a horizontal smooth surface and given [...]
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A railway flat car ,
moves at a speed V. The gun barrel makes an angle α = 60∘ with the horizontal. A shell of mass m leaves the barrel at a speed v = 12 m/s ,
relative to the barrel. Find the speed of the flat car V (in m/s) in order that it may stop after the firing. ,
whose mass together with the artillery gun is M = 2 m ,
A binary star system consists of two stars. One star has twice the mass of the other. The star rotates about their common centre of mass. Which of the following statements is correct ?
22
Sep
A binary star system consists of two stars. One star has twice the mass of the other. The star rotates about their common centre of mass. Which of the following statements is correct ? A binary star system consists of two stars. One star has twice the mass of the other. The star rotates about [...]
Two particles P and Q have mass 1 kg and 2 kg respectively. They are projected along a vertical line with velocity up = 20 m/s and uQ = 5 m/s when separation between them was 60 m. P was projected vertically up while Q was projected vertically down. Calculate the maximum height attained by the centre of mass of the system of two particles, measured from the initial position of P. Assume that the particles do not collide and that the ground is far below their point of projection [g= 10 m/s^2]
22
Sep
Two particles P and Q have mass 1 kg and 2 kg respectively. They are projected along a vertical line with velocity up = 20 m/s and uQ = 5 m/s when separation between them was 60 m. P was projected vertically up while Q was projected vertically down. Calculate the maximum height attained by [...]
Tags:
A railway flat car ,
moves at a speed V. The gun barrel makes an angle α = 60∘ with the horizontal. A shell of mass m leaves the barrel at a speed v = 12 m/s ,
relative to the barrel. Find the speed of the flat car V (in m/s) in order that it may stop after the firing. ,
whose mass together with the artillery gun is M = 2 m ,