Centre Of Force

Six charges are placed at the corner of a regurlar hexagon as shown . If an electron is placed at its centre O, force on it will be :

A particle is oscillating in a stright line about a centre of force O , towards which when at a distance x the force is mn^(2)x where m is the mass, n a constant. The amplitude is a = 15 cm . When a distance (asqrt(3))/(2) from O, find the new amplitude.

A particle is oscillating in a stright line about a centre of force O , towards which when at a distance x the force is mn^(2)x where m is the mass, n a constant. The amplitude is a = 15 cm . When a distance (asqrt(3))/(2) from O, find the new amplitude.

A particle is oscillating in a stright line about a centre of force O , towards which when at a distance x the force is mn^(2)x where m is the mass, n a constant. The amplitude is a = 15 cm . When a distance (asqrt(3))/(2) from O, find the new amplitude.

Explain why gravitational force is called a centre force ?

Centripetal force is centre seeking force and is given by_________

A particle of mass m is subjected to an attractive central force of magnitude k//r^(2) , k being a constant. If at the instant when the particle is at an extreme position in its closed orbit, at a distance a from the centre of force, its speed is (k//2ma) , if the distance of other extreme position is b. Find a//b .

A particle of mass m is subjected to an attractive central force of magnitude k//r^(2) , k being a constant. If at the instant when the particle is at an extreme position in its closed orbit, at a distance a from the centre of force, its speed is sqrt(k//2ma) , if the distance of other extreme position is b. Find a//b .

A particle of mass m is subjected to an attractive central force of magnitude k//r^(2) , k being a constant. If at the instant when the particle is at an extreme position in its closed orbit, at a distance a from the centre of force, its speed is sqrt(k//2ma) , if the distance of other extreme position is b. Find a//b .