Applied force Definition and 125 Threads

Homework Statement Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks. The acceleration of gravity is 9.8 m/s2 . 1st block = 2 kg 2nd block = 8 kg Force on second block at 52◦ μ = 0.29 [ 2kg ]-------[ 8kg ]/ 52 degrees If each...

1. Hello. I am doing a practical assignment which involves a pully system with different masses on each side attached to a string. I have figured out acceleration via a = 2x/t^2 and then Force applied by F = (.42-.38)*0.286 which gives me 0.011N. However when I graph the final solution (I have...

Homework Statement A worker drags a crate across a factoryt floor by pulling on a rope tied to the crate. The worker exerts a force of 450 N on the rope, which is inclined 38 degrees to the horizontal, and the floor exerts a horizontal frictional force on 125 N that opposes the motion. You...

When can you assume that gravity is the only "applied force" opposing friction? Homework Statement "Determine the stopping distance for a skier moving down a slope with friction with an initial speed of 24.7 m/s. The slope makes an angle of 5.02deg above the horizontal, and assume that...

I'm trying to work out a model for a spring mass system with a force acting at the centre of mass of the mass using Lagrangian mechanics. I can't work out the kinetic energy. I know the kinetic energy \text{KE}=\dfrac{1}{2}mv^2. I also have W=\int_a^b F \, dt. Should I use \Delta \text{KE} +...

Homework Statement What is the value of the force of friction? Acceleration = 1m/s^2 Applied force = 5.5N Homework Equations :confused: The Attempt at a Solution :confused: I know what to do if mass or a coefficient of friction were given, but unfortunately they're not...

Homework Statement hey just having a hard time figuring out a question about tension and applied force: A dock worker pulls two boxes connected by a rope on a horizontal floor, as shown in the figure (Intro 1 figure) . All the ropes are horizontal, and there is some friction with the floor...

Homework Statement If a force of 45 Newtons is needed to overcome friction and the coefficient of friction=0.26, what is the mass of the object? The Attempt at a Solution So would I need to find the frictional force first? But then I can't use the equation: (frictional...

Hi A block ( 0.5 kg ) is attached to a spring ( k = 40N/m ) on a frictionless table.. The spring is 0.6 meter long unstretched .. A constant force (20 N ) is applied horisontaly causing the spring to stretch 1) question : what is the speed/velocity of the box after 0.25 meter ...

Homework Statement A force of 10.0 N is applied at an angle of 30° to the horizontal on a 1.25-kg block initially at rest on a frictionless surface. a) What is the magnitude of the block’s acceleration? b) What is the magnitude of the normal force? This was en example in my book. I...

Homework Statement Box A Mass=3.2kg Force of Friction=2 Newtons Box B Mass=2.1kg Force of Friction=1 Newton Force applied 10.5 Newtons [horizontally]. http://img162.imageshack.us/img162/7697/f1qd1.png Q. Find the magnitude of the force of contact between the two boxes...

Homework Statement Assuming I have a simple body, like a box, with known center of mass, how do I find the applied force, through its center of mass that will cause the object to tip over? The object is at rest on a flat surface. Known elements: weight of object, static friction between...

if the friction force is larger than the applied force. the object wouldn't move and the acceleration would be 0 right?

a curler exerts a force forward on a 19kg curling stone and gives it an acceleration of 1.8m/s(squared) [forward]. the coefficient of kinetic friction of the ice on the curling stone is 0.080 [back]. calculate the value of the applied force. thank you in advanced

Homework Statement What would happen to the coefficient of friction if the applied force was not horizontal to the surface? Homework Equations Ff=_{\mu}FnThe Attempt at a Solution I am unsure of how to proceed with this question, but I am thinking that you can't have friction against a...

Homework Statement A horizontal force of 50 N is required to pull and 8.0 kg block at a unifrom velocity across a horizontal wooden desk. Determine the coefficient of kinetic friction. Homework Equations F_{Net}=ma The Attempt at a Solution I put F_{Net} as 0, because accleration...

how do i find applied force if it not given? how do i find force of friction if coefficient of friction is also not given? how do i find coefficient of friction of objects on 3 different surfaces? (what should be the variable?) thanks so much

Homework Statement Explain why applied force is plotted on the vertical axis of the graph even though it is the independent variable in a Hooke's Law experiment (involving a mass being attached to the spring) Homework Equations Fx = kx The Attempt at a Solution Maybe it's because...

Okay I am confuse on how i came to this conclusion and how i came to that answer. A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 12.0 N force directed 25.0° below the horizontal. (a) Determine the work done by the applied force. 30.45J (b)...

Does anyone know how to answer this question? Question: How do i determine power generated by an applied force if it takes 9.0 s to push the box up the ramp. I am given mass=2.0kg height of ramp= 2.7m length of ramp= 5.3m angle= 30* constant force= 12N What should i do I am stuck ! tell...

Wondering if someone could help me with my last set problem? I've been looking at it for quite some time now. The incoming force on the block is confusing me...as a result, I'm not sure how to set it up. I've worked it with the force parallel to the incline as well as perpendicular - but not as...

Hi, I need advice as to whether or not I solved this question correctly. I would really appreciate the feedback, etc... I really need to know if I did this right QA: A 2kg object is attached to a spring and placed on a horizontal smooth surface. A horizontal force of 20N is required to hold...

I want to know how to find the time it takes for a mass to reach a velocity if a force is applied to it.

hey everybody, i have an easy problem in friction, i just want to make sure if what i did is right; here is the problem: A 22kg mass is slid up an incline of 71degree to the horizontal at constant velocity. If mu=.29, what is the applied force? here is what i did: Fgravity =...

A 115.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 49.0 deg with the horizontal. Find the magnitude of the applied force F. I can't seem to get this problem right. In the x-direction there is a push. Which I got mgsin(49). In...