When a body is in uniform circular motion, its speed remains constant but its velocity, angular acceleration, angular velocity changes due to change in its direction. The centrifugal force is very real if you are in a rotating reference frame. However, the centrifugal force is an inertial force, meaning that it is caused by the motion of the frame of reference itself and not by any external force.
Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Physics Does constant speed mean net force is 0? Ben Davis October 13, Does constant speed mean net force is 0? Can you have a constant speed with zero net force? Can an object have a net force of zero and still be moving?
Can an object maintain uniform velocity when net force is zero? Can an object maintains uniform velocity then net force acting on it is not zero? Can an object maintain uniform velocity when its acceleration is not zero?
Why a body in uniform velocity has zero acceleration? What is the force needed to keep an object moving with uniform velocity? Does uniform velocity means no acceleration?
What is the difference between uniform acceleration and uniform velocity? Explanation: I will start by deconstructing the problem. An object acted on by three forces moves with a constant velocity If an object is moving at constant velocity, it means that it has an acceleration of 0. Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2?
What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing? What is the ideal gas law constant?
How do you calculate the ideal gas law constant? Make an effort to solve this problem. When you run into difficulties, consult the help from a previous unit. See Answer The F grav is. In conclusion, a situation involving a force at an angle can be simplified by using trigonometric relations to resolve that force into two components. Such a situation can be analyzed like any other situation involving individual forces.
Try each problem and then click the button to view the answers. A N applied force 30 degrees to the horizontal accelerates a box across a horizontal sheet of ice see diagram. Glen Brook, Olive N.
Glenveau, and Warren Peace are discussing the problem. Glen suggests that the normal force is 50 N; Olive suggests that the normal force in the diagram is 75 N; and Warren suggests that the normal force is N. While all three answers may seem reasonable, only one is correct. Indicate which two answers are wrong and explain why they are wrong. Glen Brook perhaps thinks that the F app force is 50 N upwards and thus the F norm must be 50 N upwards to balance the Fgrav.
A box is pulled at a constant speed of 0. Perform an extensive analysis of the diagram below to determine the values for the blanks. See Answer First use the mass to determine the force of gravity. Use your understanding of force relationships and vector components to fill in the blanks in the following diagram and to determine the net force and acceleration of the object. The horizontal component of the applied force can be calculated using a trigonometric function:.
See Answer The F grav can be calculated from the mass of the object. Since the speed is constant, the horizontal forces must balance. The following object is being pulled at a constant speed of 2. The F grav can be calculated from the mass of the object. The object moves at constant speed; thus, the horizontal forces must balance.
The applied force can now be found using a trigonometric function and the horizontal component:. The slope of a velocity-time graph is the acceleration of the object. The net force is the vector sum of all the forces. That is,.
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