- #1
physics_10
- 13
- 0
A crate has a mass of 24 kg. What applied force is required to produce an acceleration of 3m/s^2 if the frictional force is 90 N?
In summary, an applied force is a push or pull on an object that causes it to move or accelerate. It is different from the force of friction, which acts to slow down or stop motion. The force of friction can be calculated using the formula F = μN and is affected by various factors such as surface type, roughness, and speed. To reduce the force of friction, lubricants, smooth surfaces, and decreased weight or force can be used.
- #2
tiny-tim
Science Advisor
Homework Helper
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welcome to pf!
hi physics_10! welcome to pf!
show us what you've tried, and where you're stuck, and then we'll know how to help!
hi physics_10! welcome to pf!
show us what you've tried, and where you're stuck, and then we'll know how to help!
FAQ: Applied Force/Force of friction
What is an applied force?
An applied force is a force that is applied to an object by a person or another object. It is a push or pull that causes an object to accelerate or move in a certain direction.
What is the difference between applied force and force of friction?
Applied force is the external force applied to an object, while force of friction is the force that opposes the motion of an object. Applied force is necessary for an object to move, while force of friction acts to slow down or stop the motion.
How do you calculate the force of friction?
The force of friction can be calculated using the formula: F = μN, where F is the force of friction, μ is the coefficient of friction, and N is the normal force. The coefficient of friction depends on the surfaces in contact and the normal force is the force exerted by the surface on the object.
What factors affect the force of friction?
The force of friction is affected by the type of surfaces in contact, the roughness of the surfaces, the force pressing the surfaces together, and the speed at which the surfaces move against each other. It also depends on the type of motion, whether it is sliding, rolling, or fluid friction.
How can the force of friction be reduced?
The force of friction can be reduced by using lubricants, such as oil or grease, between the surfaces in contact. Smooth and polished surfaces also have lower friction than rough surfaces. Additionally, reducing the weight or force pressing the surfaces together can also decrease the force of friction.