# What is Force at angle: Definition and 28 Discussions

A fluid flowing around the surface of an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it can act in any direction at right angles to the flow.
If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a hydrodynamic force.
Dynamic lift is distinguished from other kinds of lift in fluids. Aerostatic lift or buoyancy, in which an internal fluid is lighter than the surrounding fluid, does not require movement and is used by balloons, blimps, dirigibles, boats, and submarines. Planing lift, in which only the lower portion of the body is immersed in a liquid flow, is used by motorboats, surfboards, and water-skis.

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1. ### Construction Workbench Top Pulling Force With Sloping Leg

Hello, I am making a workbench for my mancave, the front edge of the bench is supported by legs that slopes inwards at 78 degrees and the back/rear edge of the bench top is fixed to the wall. How do I calculate the force Q pulling the bench top away from the wall please? Also is the force Q...
2. ### Two masses on a slope with a connected tension force

I derived an equation but I have no idea how I can find the mass of the unknown without the normal force in either the x or y direction
3. ### Confused about resolving Tension and Weight

Calculations with 1: T1sintheta + T2sintheta = W T1costheta = T2costheta Calculations with 2: Wsintheta = T1 Wcostheta = T2 These are not equivalent. Can someone point out the flaw in my logic? Edit: System is in equilibrium!
4. ### A Motorcycle, the force exerted upon from collision

Synopsis, The insurance company wants to repair this 3-year-old motorcycle with 3400 miles on the odo father taking this hit. The motorcycle was modified with an aftermarket "engine guard," which was made out of powder-coated steel tubing and bolted directly to the frame which is made out of...
5. ### I Are Peak Moment and Peak Torque Equivalents in Biodex Dynamometry Measurements?

Apologies if this is in the wrong section as it isn't particularly medical in nature despite it being about the body. I am currently conducting a rapid review with outcomes of knee muscle strength. This is measured by biodex dynamometry, which assesses numerous values including Peak moment...
6. ### Extending an aircraft landing gear that has gotten stuck

Imagine an aircraft of which the its wing is connected to its landing gear by means of a hinge (joint), and then the gear suddenly gets stuck midway. If, subsequently, the aircraft makes a turn around its longitudinal axis (see picture), it seems to hold true that then the angle between the...
7. ### Solving Force and Motion: Pulling 25.0 kg Sled 25m

<< Mentor Note -- New poster has been reminded to use the Homework Help Template when posting schoolwork questions >> A 25.0 kg sled is pulled (assume frictionless) with a force of 15.0 N at an angle of 20 degrees above the horizontal. (a.) How long will it take to pull the sled 25m? (b.) How...
8. ### Find Value of tan φ of Reaction Force | Isaac Physics

1. Find the value of tan φ to 2 sf where φ is angle made by line of action of reaction force at hinge above horizontal. https://isaacphysics.org/questions/trapdoor_num Part B Angle of reaction forceHomework Equations Mass of uniform trapdoor: m=4.0kgm=4.0kgThe trapdoor is held open making an...
9. ### Calculation of the weight of an insect floating by surface tension

Homework Statement The surface of a liquid is just able to support the weight of a six-legged insect. The leg ends can be assumed to be spheres each of radius 3.2 × 10−5 m and the weight of the insect is distributed equally over the six legs. The coefficient of surface tension in this case is...
10. ### Find the forces on a table that is lifted in a tilted position

Homework Statement Homework EquationsThe Attempt at a Solution what's the Fa and Fb? my logic is Fa = Wa - N = mg - ##\frac{N}{\cos \theta}## so is Fb... so the ratio is 1. But I know it's wrong. What will make the difference between Fa and Fb? can anyone give a clue please?
11. ### I Splitting force vectors into components

Hi I am studying force components on a inclined plane. I understand the concept of breaking vectors into X , Y Components relative to the horizontal plane however what I can't seem to make sense of is how the ratios of a triangle and the main input force being the hypotenuse of the triangle...
12. G

### Rotational Torque/Force Problem (rod around hinge)

Homework Statement A Rod of Mass "M" is attached to a two-way hinge on the floor. It is being pulled by a spring (extension spring, so force is pulling the rod to the right, causing it to move clockwise). The hinge is frictionless. the rod has a mass of 5kg evenly distributed the pulling...
13. ### Distance an object travels after sliding and falling from roof

Homework Statement [/B] My physics teacher - "You may like this question, its very structured" Calculate the distance a slate tile falls from a roof The roof is angled at an angle 30 degrees. mass of slate tile is 0.8kg The length of the roof is L=6m The height of the roof above the ground is...
14. ### I Forces applied to a leaning levitating bicycle

Hi! So I'm building an electromagnetic bicycle where the frame is levitating over the wheels, thus reducing the rolling friction to almost zero by removing the bearings. Magnets have also been placed alongside the wheels to provide side to side stability. Black is the frame, red are the magnets...
15. ### Calculating components of a force applied at an angle

1. The problem statement, all variables, and given/known data Attached is a diagram of what I am trying to solve. I need to calculate the X and Y components for both F1 and F2. The results will then be used in a later problem that I've already solved but I am coming up with an error and I was...
16. ### Calculating tension in a wire holding beam against wall

Hi, this is my first forum post - sorry if I'm in the wrong place, or I've done something wrong! Homework Statement Here goes: There is a beam of 0.5m length hinged to a wall at a right angle with 200N mass at the end of the beam. This is supported by a wire T at angle 30°. The question asks...
17. ### Calculating the Minimum Force for Box to Move at Constant Velocity

Homework Statement A force F is applied to a box of mass M at an angle θ below the horizontal (see figure). The coefficient of static friction between the box and the floor is μs, and the coefficient of kinetic friction between the two surfaces is μk. a) What is the minimum value of F to get...
18. ### What is the solution to the Kinematics of Particles Homework?

Homework Statement Refer to figure please. Homework Equations ∑Fy=0 before string is cut The Attempt at a Solution I tried summing the two forces in the y direction before the strings were cut which would be the two tensions at a sin40° and minus the weight of the ball(mg). That gave me T in...
19. ### How Can I Reduce Sag in My Aluminum Tubing System Using Newtonian Physics?

Hello All, I have a question for which I'd like an authoritative answer, if some physics genius would be so kind. I'll try to provide as much background as I can but follow up questions for clarity are more than welcome! So I'm working on the design for a patent application and it involves a...
20. ### Minimum force to make box slide down slope

Homework Statement If m=5.0kg, φ=30◦ and μs =0.87, what is the minimum force needed to make the box slide down the slope? [/B] Homework Equations force of status friction is less than or equal to the normal force multiplied by the coefficient of static friction F,normal=mgcosφ The image...
21. ### Need help figuring out this forces question

Homework Statement the question states: "wo forces act on an object at an angle of 75 degrees. One force is 195N. the net force it 225n. determine the second force that it makes with the net force" Homework EquationsThe Attempt at a Solution I tried finding the second force by finding the two...
22. ### Force with friction problem(determine a force by the angle)

Homework Statement A block of mass m rests on a horizontal table. The block is pulled by a massless rope with a force F at an angle θ. The coefficient of static friction is 0.60. The minimum value of the force needed to move the block depends on the angle θ a)Discuss qualitatively how you would...
23. ### Calculating the force acting on a pulley in a hoist system

In the diagram below there is a hoisting system set up to lift a 1000 lb. unit up a radio tower. This unit is used for painting towers and is lifted using a capstan hoist. As the unit is lifted, it will be tagged with a 6ft. (adjustable) tag line with a pulley that travels up the end of the...
24. ### Force between 2 electromagnets

I am looking forward to know how to calculate the force between 2 electromagnets. what is the formula to find attraction and repulsion forces between them ? Thank you.
25. ### Finding max acceleration with force at angle incl friction

Homework Statement Hey. I was doing some exam practice questions, but I hit a snag with this one and can't quite work out how to proceed. A 6kg block at rest is pulled along a horizontal surface by force F→ at angle θ. Given that the coefficient of kinetic friction is 0.15, find the optimal...
26. ### Finding an unknown force at an unknown angle

Homework Statement So we have a force of unknown magnitude acting on these struts at an angle θ measured from strut AB. The component of the force acting along AB is 600lb, and the magnitude of the force acting along BC is 500lb. If Φ = 60°, what is the magnitude of F and the angle θ...
27. ### Three Springs in an Equilateral Triangle

Homework Statement [/B] Three identical point masses of mass m each are placed at the vertices of an equilateral triangle and joined through springs of equal length and spring constant k . The system is placed on a smooth table. If the masses are displaced a little towards the centroid of the...
28. ### Work done by force on an angle

Homework Statement In the figure below (image attached) a constant force of 82N is applied to a 3kg box at an angle of 53 degrees causing the box to move up a frictionless ramp. How much is work is done by that force (Fa) when the box has moved through a vertical distance of .15m? Homework...