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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Coefficient of friction depends on

Both (A) and (B)
Area of contact only
None of these
Nature of surfaces only

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Applied Mechanics and Graphic Statics
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is

4/5
3/5
3/4
5/3

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Applied Mechanics and Graphic Statics
The forces which meet at one point and have their lines of action in different planes are called

Intersecting forces
Non-coplanar concurrent forces
Coplanar non-concurrent forces
Non-coplanar non-current forces

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Applied Mechanics and Graphic Statics
On a mass ‘m’ describing a circular path of radius ‘r’, the centrifugal force

Is mw2r/g kgf
Acts towards the centre of rotation
Acts tangentially to the circular path
Acts away from the centre of rotation

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Applied Mechanics and Graphic Statics
One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The reaction between the sphere and the wall of the arrangement made is

110 kg
102.5 kg
108.5 kg
105.5 kg

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Applied Mechanics and Graphic Statics
A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²)

40 m/sec
50 m/sec
25 m/sec
15 m/sec

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