Yes indeed. Since the pulley is massless, there cannot be a net force on it -- if there was, its acceleration would be infinite.phantomvommand said:
thanks for this. What is not clear to me is how the F/2 force in each branch of the string acts to negate the F force on the pulley. At the "bend" of the string, wouldn't the forces there just be F/2 in 2 opposite directions, both of which are perpendicular to the direction of F on the pulley? How does the pulley experience the opposing force of F?Doc Al said:
Tension in a pulley refers to the pulling force that is exerted on the string or rope that is wrapped around the pulley. It is the force that keeps the string taut and allows the pulley to function properly.
Tension in a pulley system can be calculated using the equation T = F x r, where T is the tension, F is the applied force, and r is the radius of the pulley. This equation assumes that there is no friction in the system.
Yes, the tension in a pulley can change if the pulley is moving. This is because the applied force and the radius of the pulley can change, which affects the overall tension in the system. Additionally, friction can also play a role in changing the tension.
The weight of the object being lifted does not directly affect the tension in a pulley. However, the weight does determine the amount of force that needs to be applied to the pulley in order to lift the object. This force will then affect the tension in the string around the pulley.
Yes, the tension in a pulley can be greater than the weight of the object being lifted. This is because the applied force can be greater than the weight of the object, resulting in a higher tension in the string. However, the tension cannot exceed the breaking strength of the string or rope used in the pulley system.