Where should the resultant force be located on a body?

1 Answer

Answer :

The resultant force should be located on the body such that it produces the same effect as the distributed loads. Resultant force should be located at a distance of center of pressure Xcp from the leading edge.

Related questions

Description : What is meant by stream lining a body?

Last Answer : Streamlining is the shaping of an object, such as an aircraft body, to reduce the amount of drag or resistance to motion and increases lift through a stream of air. A curved shape allows air to flow smoothly around it. A flat shape fights air flow and causes more drag or resistance.

Description : Tell something about differential and integral approach?

Last Answer : One may establish a big control volume to encompass the region R and calculate the overall features like drag & lift by studying what happens at the control surface. This procedure is called integral approach. Differential ... the flow at every point in a given flow field in the form P(x,y,z,t).

Description : What is finite control volume approach?

Last Answer : Consider a control volume in space drawn within a finite region of the flow. This volume is called as the control volume and the closed surface which surrounds the control volume is called as ... are applied to the fluid inside the control volume and to the fluid crossing the control surface.

Description : List the various models available for flow analysis?

Last Answer : For the analysis of a fluid element in its motion, various models are available for the purpose of study such as a) Finite control volume approach b) Infinitesimal fluid element approach c) Molecular approach

Description : What are the procedures for the development of an equation in aerodynamics?

Last Answer : a) Invoke the basic principles of fluid flow a. Mass is conserved b. Momentum is conserved, i.e. Newton‟s second law c. Energy is conserved b) Determine the suitable model of the fluid c) Apply the basic principles in the model of the fluid to obtain the mathematical equations

Description : What is critical angle of attack and what will happen when it is exceeded?

Last Answer : The angle of attack which produces the maximum lift coefficient is called as the critical angle of attack. It is also called as the "stall angle of attack". At the critical angle of attack ... becomes more and more fully separated and the airfoil produces less coefficient of lift and will stall.

Description : Define angle of attack?

Last Answer : The angle between the chord line of an airfoil and the relative wind is defined as the angle of attack.

Description : What is relative wind velocity?

Last Answer : The relative wind is the direction of movement of the atmosphere relative to an aircraft or an airfoil. It is opposite to the direction of movement of the aircraft or airfoil. The velocity at which this relative wind is flowing is called as the relative wind velocity.

Description : How the concepts of Bernoulli‟s principle differ from Archimedes principle?

Last Answer : Bernoulli‟s principle states that the increase in speed of the fluid element occurs with a decrease in pressure of the fluid. Archimedes principle states that the upward force exerted on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.

Description : Explain the constituents of various gases in air and specify its proportions?

Last Answer : Air is a gas which is composed of various gases such as nitrogen, oxygen, carbondi-oxide, argon, etc. Nitrogen – 78% Oxygen – 21% Other gases – 1%

Description : Explain the important properties of international standard atmosphere?

Last Answer : International standard atmosphere is the atmospheric model of how the pressure, density and temperature of the earth‟s atmosphere vary over a wide range of altitudes It has several layers a) Troposphere b) Stratosphere c) Mesosphere d) Ionosphere e) Exosphere

Description : Enumerate the names of some notable aerodynamicists?

Last Answer : There are several aerodynamic experts who are responsible for the flight. Some of them are listed as a) Daniel Bernoulli b) Ludwig Prandtl c) George Cayley d) Theodore von Karman e) Martin Wilhelm Kutta f) Richard whitcomb g) Nicholay Zhukowsky

Description : What are the major objectives of aerodynamics?

Last Answer : a) To estimate the aerodynamic forces and moments acting on the bodies moving through the air (e.g.) lift, drag, moments on wings, fuselages, etc. b) To calculate the amount of heat transfer ... (e.g.) aerodynamic heating. c) To determine the flow moving through the air internally and externally.

Description : List the different types of aerodynamics?

Last Answer : a) Internal aerodynamics which deals about the flow of air inside the ducts (e.g.) flow through nozzles, flow in a wind tunnel, etc. b) External aerodynamics which deals about the flow around moving objects (e.g.) flow of air over an aircraft.

Description : What are the major classifications of fluid dynamics?

Last Answer : a) Hydrodynamics which deals about the movement of water. b) Gas dynamics which deals about the movement of gases. c) Aerodynamics which deals about the movement of air.

Description : Give the importance of aerodynamics in designing an aircraft?

Last Answer : a) When an aircraft is moving in air, some reactions take place in the properties of air and aerodynamics helps in studying those properties. b) Aerodynamics deals about the proper shape of the aircraft which will reduce the formation of shock waves and helps in achieving the desired Mach number.

Description : What do you mean by aerodynamics?

Last Answer : Aerodynamics is the branch of science which deals with the movement of gases especially air and its interaction with moving objects. Aerodynamics is the study of forces and resulting motion of objects through air.

Description : The resultant of a force acting on a body will be zero, if the body a.Rotates with uniform acceleration b.Moves along a curved path c.Rotates d.Does not rotate e.Rotates with uniform deceleration

Last Answer : d. Does not rotate

Description : Coefficient of friction is the  (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction  (B) Ratio of limiting friction and normal reaction  (C) The ... body is just about to move  (D) The friction force acting when the body is in motion 

Last Answer : (B) Ratio of limiting friction and normal reaction

Description : Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force ... body is just about to move (D) The friction force acting when the body is in motion

Last Answer : (D) The friction force acting when the body is in motion

Description : Limiting force of friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction ... body is just about to move (D) The friction force acting when the body is in motion

Last Answer : (C) The friction force acting when the body is just about to move

Description : Angle of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The ratio of minimum ... (D) The ratio of minimum friction force to friction force acting when the body is in motion

Last Answer : (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction

Description : Buoyant force is (A) Resultant force acting on a floating body (B) Equal to the volume of liquid displaced (C) Force necessary to keep a body in equilibrium (D) The resultant force on a body due to the fluid surrounding it

Last Answer : Answer: Option D

Description : Buoyant force is (A) The resultant force acting on a floating body (B) The resultant force on a body due to the fluid surrounding it (C) Equal to the volume of liquid displaced (D) The force necessary to maintain equilibrium of a submerged body

Last Answer : Answer: Option B

Description : The acceleration of a particular body is directly proportional to the resultant force acting on it & inversely proportional to its mass.  a. Pascal's Law  b. Joule's Law  c. Newton's Law  d. None of the above

Last Answer : Newton's Law

Description : If the resultant force acting on a body of constant mass is zero, the body's acceleration is: w) increasing x) decreasing y) always zero z) negative.

Last Answer : ANSWER: Y -- ALWAYS ZERO 

Description : If the resultant force acting on a body of constant mass is zero, the body's momentum is: w) increasing x) decreasing y) always zero z) constant

Last Answer : ANSWER: Z -- CONSTANT

Description : The angle of friction is a.The angle which frictional force makes with the normal b.The anle at which the force applied from external souce will cause movement c.The angle at which fictional ... the normal reaction and the resultant of normal reaction and the limiting friction e.None of the above

Last Answer : d. The angle between the normal reaction and the resultant of normal reaction and the limiting friction

Description : The coefficient of friction is a.The tangent of the angle between the normal reaction and direction of limiting friction b.The tangent of the angle between the normal reaction and the resultant ... e.The angle between the normal reaction and the resultant of normal reaction and the limiting friction

Last Answer : a. The tangent of the angle between the normal reaction and direction of limiting friction

Description : Two forces of 6 and 8 kg act at right angles to each other, the resultant force will be a.100 b.28 c.41 d.14 e.10

Last Answer : e. 10

Description : A force of 60 N acting perpendicular to a force of 80 N, magnitude of resultant force is 

Last Answer : A force of 60 N acting perpendicular to a force of 80 N, magnitude of resultant force is (A) 20N (B) 70N (C) 100 N (D) 140 N

Description : Two forces, F1 and F2, each of magnitude 5 N are inclined to each other at 60°. Find the magnitude and direction of their resultant force.

Last Answer : Two forces, F1 and F2, each of magnitude 5 N are inclined to each other at 60°. Find the magnitude and direction of their resultant force.

Description : Three long straight wires `A`, `B` and `C` are carrying current as shown in figure. Then the resultant force on `B` is directed

Last Answer : Three long straight wires `A`, `B` and `C` are carrying current as shown in figure. Then ... outward D. Perpendicular to the plane of paper and inward

Description : State the resultant force on you when you are lying stationary in bed?

Last Answer : herhhh

Description : A car is running on a road at a uniform speed of 60 km/hr. What is the net resultant force on the car?

Last Answer : Equal to zero

Description : Acceleration of a rocket having mass 5000 kg and resultant force acting on it is 200,000 N is A. 50 m s-2 B. 56 m s-2 C. 70 m s-2 D. 40 m s-2

Last Answer : . 40 m s-2

Description : Resultant force acting on object and rate of change of linear momentum are A. inversely related B. not related at all C. directly related D. directly proportional

Last Answer : directly related

Description : If weight of a falling tennis ball is 1.0 N and drag force acting on it is 0.2 N then resultant force is A. 0.8 N B. 0.5 N C. 1 N D. 2 N

Last Answer :  0.8 N

Description : Object is in equilibrium if resultant force acting on it is A. increasing B. decreasing C. zero D. becomes constant

Last Answer : zero

Description : Combined effect of several forces is known as A. net force B. resultant force C. normal force D. weight

Last Answer : resultant force

Description : The resultant axial force on bolt depends upon (A) Initial tension (B) External applied load (C) Stiffness of bolt and parts held by bolt (D) All three factors

Last Answer : (D) All three factors

Description : The centre of pressure is (A) Always below the centroid of the area (B) Always above the centroid of the area (C) A point on the line of action of the resultant force (D) At the centroid of the submerged area

Last Answer : (C) A point on the line of action of the resultant force

Description : The product of either force of couple with the arm of the couple is called  (A) Resultant couple  (B) Moment of the forces  (C) Resulting couple  (D) Moment of the couple 

Last Answer : (D) Moment of the couple 

Description : The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m  arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be  (A) 20 kg, -ve sense  (B) 20 kg, +ve sense  (C) 10 kg, +ve sense  (D) 10 kg, -ve sense 

Last Answer : (A) 20 kg, -ve sense

Description : If S, L and R are the arc length, long chord and radius of the sliding circle then the perpendicular distance of the line of the resultant cohesive force, is given by (A) a = S.R/L (B) a = L.S/R (C) a = L.R/S (D) None of these

Last Answer : (A) a = S.R/L

Description : Design of R.C.C. cantilever beams, is based on the resultant force at (A) Fixed end (B) Free end (C) Mid span (D) Mid span and fixed support

Last Answer : Answer: Option A

Description : The center of pressure of a surface subjected to fluid pressure is the point (A) On the surface at which resultant pressure acts (B) On the surface at which gravitational force acts (C) At which all hydraulic forces meet (D) Similar to metacentre

Last Answer : Answer: Option A

Description : A vector quantity whose direction is the same as the direction of the velocity  a. Force  b. Momentum  c. Friction  d. Resultant

Last Answer : Momentum

Description : The beds which have a gentle upstream dip will be_______ to the resultant force (R), hence can provides the best resistance to withstand the stresses or loads acting in the area. (A) Parallel (B) Perpendicular (C) None of these 

Last Answer : (B) Perpendicular