Question

I need information about torque!!!

Answer 1

can you be more specific.

Answer 2

torque is needed for getting angular motion

Answer 3

unit of torque is N.m

Answer 4

so torque=force*distance

Answer 5

it may b positive or negative

Answer 6

Torque is the rotational equivalent of force. It is sometimes referred to a a twisting force. It causes a change in angular momentum. It is force times distance BUT the force must be perpendicular to the distance at which it is acting. See the drawing Example of torque include turning a screw, starting a lawnmower with a pull cord or an accelerating cars tire. Torque can be converted back to a regular force like in the cars tires where the rotating tire (which are rotating because of the torque generated by the engine) are in contact with the road and exerting a force on it thus moving the car.

Answer 7

in equilibrium problems, why is used the torque to solve them? torque is used in angular motion only??!!

Answer 8

If torque is used then there must some rotational aspect to the problem. Equilibrium requires all forces to balance out including torques. For torques the angular moment will be constant in rotational equilibrium.