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Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is -

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Important Questions on Statics

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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 1
A force of 6 kg wt. and another of 8 kg wt. can be applied together to produce the effect of a single force of:
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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 2
The tension in the rope used to pull a body on an inclined surface remains constant at all the points, if and only if
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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 3
Two masses m1 and m2 are placed on a smooth horizontal surface and are connected by a string of negligible mass. A horizontal force F is applied on the mass m2 as show in the figure. The tension in the string is

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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 4
A wire elongates by 1 mm when a load W is hanged from it. If this wire goes over a pulley and two weights W each is hung at two ends, the elongation of wire will be
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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 5
With what minimum acceleration can a fireman slide down a rope while breaking straight of the rope is 2 3  of the weight?
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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 6

Two masses connected in series with two massless strings are hanging from a support as shown in the figure. Find the tension in the upper string

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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 7
If XYZ is an equilateral triangle, then the resultant of the three forces, as shown in the figure is


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Mathematics Crash Course NDA & NA EE>Chapter 33 - Statics>Exercise 1>Q 8
A body of mass 10 kg is acted upon by two forces each of magnitude 10 N making an angle of 60° with each other. Find the net acceleration of the body.