torque (moment of force)ch7

• clockwise is when the weight is on the right
• anticlockwise is when the weight is on the left
• 2 factors have an influence on the rotation

  magnitude of the force and distance between force and fulcrum
• the lever arm is the distance between the point of application of the force and the axis of rotation(fulcrum)
• formula torque : M=+-F. L
• if the sum of the torque is equal to nil, then the object is in rotational equilibirum and the reverse is true :if the object is in rotational equilibrium, then the sum of torque is equal to zero
• • static equilibrium: no rotation
• Dynamic equilibrium: objects rotates at constant rate in the same sens
• M=torque (in n.m)
• F=force ( in N)
• L=lever arm (in m)