A string of length 90 cm is fastened to two points ‘A’ and ‘B’ at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force ‘P’ is applied to the ring such that it is in equilibrium vertically below ‘B’. The value of ‘P’ is:

Applied Mechanics and Graphic Statics
A string of length 90 cm is fastened to two points ‘A’ and ‘B’ at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force ‘P’ is applied to the ring such that it is in equilibrium vertically below ‘B’. The value of ‘P’ is:

100 g

40 g

60 g

80 g

100 g

40 g

60 g

80 g

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Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

That polygon of forces must close

None of these

Both (A) and (B)

That resultant couple must be zero

That polygon of forces must close

None of these

Both (A) and (B)

That resultant couple must be zero

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Applied Mechanics and Graphic Statics
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

Bears a constant ratio to their velocity of approach

Is directly proportional to their velocity of approach

Is inversely proportional to their velocity of approach

Is equal to the sum of their velocities of approach

Bears a constant ratio to their velocity of approach

Is directly proportional to their velocity of approach

Is inversely proportional to their velocity of approach

Is equal to the sum of their velocities of approach

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Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

sin θ/(1 + sin θ)

(1 - sin θ)/(1 + sin θ)

(1 + sin θ)/(1 - sin θ)

(1 - sin θ)/sin θ

sin θ/(1 + sin θ)

(1 - sin θ)/(1 + sin θ)

(1 + sin θ)/(1 - sin θ)

(1 - sin θ)/sin θ

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Applied Mechanics and Graphic Statics
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of

11.26 km/sec, the satellite escapes the pull of the earth

8.04 km/sec at a height of 285 km

All listed here

11.11 km/sec at a height of 37,400 km

11.26 km/sec, the satellite escapes the pull of the earth

8.04 km/sec at a height of 285 km

All listed here

11.11 km/sec at a height of 37,400 km

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Applied Mechanics and Graphic Statics
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball ‘B’ on the table. If the impact is perfectly plastic, the velocity of the ball ‘B’ just after impact would be

None of these

Zero

10 m/sec

5 m/sec

None of these

Zero

10 m/sec

5 m/sec

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics The condition of equilibrium for any system of forces in a plane is

Applied Mechanics and Graphic Statics Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

Applied Mechanics and Graphic Statics Maximum efficiency of a screw jack for the angle of friction θ, is

Applied Mechanics and Graphic Statics The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of

Applied Mechanics and Graphic Statics A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball ‘B’ on the table. If the impact is perfectly plastic, the velocity of the ball ‘B’ just after impact would be

Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

Applied Mechanics and Graphic Statics
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation

Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

Applied Mechanics and Graphic Statics
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of

Applied Mechanics and Graphic Statics
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball ‘B’ on the table. If the impact is perfectly plastic, the velocity of the ball ‘B’ just after impact would be