Can kinetic energy of a system be increased or decreased without applying any external force on the system. answer is given yes. please explain by one or two examples how???
Approved Tutor Answer15 Years agoyes it is possible,
consider two charges particles of opposite sign are placed at some distance....
if they are released then then their potential energy continiously decreases and kinetic energy increases...this all happens due to their mutual electroststic attraction and not by any external force....
similar example can be taken for gravitational force...
if two protons are placed at a small seperation the due to force of repulsion they would accelerate in opposite directions thus their kinetic energy increases
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
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A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
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