Civil Engineering :: Applied Mechanics and Graphic Statics
- The Law of Polygon of Forces states that
- A cube on a smooth horizontal surface
- The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through
- The rate of change of displacement of a body with respect to its surrounding, is known
- A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is
- A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is
- A particle moves along a straight line such that distance ‘x’ traversed in ‘t’ seconds is given by x = t²(t + 1), the acceleration of the particle, will be
- A Seconds pendulum executes
- The forces which meet at one point and have their lines of action in different planes are called
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A.
If a polygon representing the forces acting at point in a body is closed, the forces are in equilibrium |
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B.
If forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by t |
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C.
If forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side |
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D.
If forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium |