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Determine the horizontal force P to be applied to a block of weight 450N to hold it in position on a smooth inclined plane which makes an angle 30 with horizontal

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Questions


A retaining wall of height H with smooth vertical backface supports a backfill inclined at an angle  with the horizontal. The backfill consists of cohesionless soil having angle of internal friction . If the active lateral thrust acting on the wall is Pa, which one of the following statements is TRUE?Given below are the four spellings of the same word. Choose the correct one.
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A block of mass 10 kg rests on a horizontal floor. The acceleration due to gravity is 9.81 m/s2 . The coefficient of static friction between the floor and the block is 0.2. A horizontal force of 10 N is applied on the block The magnitude of force of friction (in N) on the block is____
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Resolve 400 N force acting on a block as shown in fig 1.23 i) into horizontal and vertical components ii) Along the inclined plane and right angles to the plane.
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A rock block of mass 100 kg is to be lifted by a horizontal force P as shown in the figure below. Smooth rollers are placed between the wedges. The coefficient of static friction between wedge A and surface C and between wedge B and surface D is 0.3. Ignoring the weight of the wedges and the friction between the roller and the wedges, the minimum force P in kg required to lift the block (round off to one decimal place) is ___________.
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The figure shows an idealized plane truss. If a horizontal force of 300 N is applied at point A, then the magnitude of the force produced in member CD is ______ N.
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A cone, with a base of 10 cm diameter and axis of 12 cm, is lying on Horizontal Plane (HP) along its generator. The internal angle which the base of the cone makes with the HP is _____ degrees.
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A tractor mounted off - set type reciprocating mower is driven by the PTO shaft. The maximum inertia force of 3.2 kN occurs along the pitman at 32 o crank angle and 27 o pitman angle with the horizontal plane. The kniv
1 Answer

A circular steel bar of diameter 10 mm is bent into the shape as shown in figure and lies x z plane A horizontal force P applied along positive direction The yield strength 200 MPa Neglecting effect transverse shear load Newton required to initiate yielding per maximum stress theory failure is : up two decimal places..
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A ladder leaning against a wall makes an angle of 60° with the horizontal. If the foot of the ladder is 2.5 m away from the wall, find the length of the ladder. Mathematics CBSE class 10 2016
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On a horizontal ground, the base of a straight ladder is 6 m away from the base of a vertical pole. The ladder makes an angle of 45o to the horizontal. If the ladder is resting at a point located at one-fifth of the height of the pole from the bottom, the height of the pole is ____ meters.
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If a line is inclined to Vertical Plane and parallel to Horizontal Plane, then which of the following statements is always correct ?
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A n inclined cylindrical confined aquifer has coefficient of permeability of 40 m/day. The horizontal distance between two vertical wells penetrating the aquifer is 800 m. The water surface elevations in the wells are 50 m and 45 m above a common horizontal datum. The absolute value of Darcy flux through the aquifer is ______________ m/day.
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A two-wheel drive tractor is taking a turn with a radius of curvature 5.0 m. The minimum horizontal distance between the tipping axis and line of action of the CG is 800 mm. The angle between the line of action of centrifugal force and perpendicular direction to the tipping plane is 15o . If the vertical distance of the CG from the ground level is 900 mm, the limiting speed (in km h-1 ) of the tractor to prevent overturning (rounded off to two decimal places) is _________.
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A circular steel bar of diameter 10 mm is bent into the shape as shown in figure, and lies in x-z plane. A horizontal force P is applied along the positive z-direction as shown. The yield strength of the steel is 200 MPa. Neglecting the effect of transverse shear, the load P (in Newton) required to initiate yielding as per maximum shear stress theory of failure is............[up to two decimal places]
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In a set of N successive polarizers, the mth polarizer makes an angle ( m π/2N ) with the vertical. A vertically polarized light beam of intensity I0 is incident on two such sets with N = N1 and N = N2, where N2 > N1. Let the intensity of light beams coming out be I(N1 ) and I(N2 ) , respectively. Which of the following statements is correct about the two outgoing beams? (A) I(N2 ) > I(N1 ) ; the polarization in each case is vertical (B) I(N2 ) < I(N1 ) ; the polarization in each case is vertical (C) I(N2 ) > I(N1 ) ; the polarization in each case is horizontal (D) I(N2 ) < I(N1 ) ; the polarization in each case is horizontal
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what is Horizontal Plane and Top View
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A ‘gentle’ fold with an interlimb angle equal to 160 appears tight (apparent interlimb angle equal to 20) in horizontal section. According to the plunge of the fold axis, it can also be classified as
1 Answer

A horizontal force 10 N is applied at support B on the frame as shown in figure. Considering only bending deformation, the vertical reaction (in N) at support B is .......... [up to one decimal place]
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For an airplane flying in a vertical plane, the angle of attack is 3o , the horizontal and vertical components of velocity in wind axis are 300 km/h and 15.72 km/h, respectively. The pitch attitude of the airplane is _______ degrees (round off to 2 decimal places).
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An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object? - Physics Cbse class 11
1 Answer
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