Applied mechanics and graphic statics

1. The angle of friction is: A. The ratio of the friction and the normal reaction B. The force of friction when the body is in motion C. The angle between the normal reaction and the resultant of normal reaction and limiting friction D. The force of friction at which the body is just about to move

The ratio of the friction and the normal reaction
The force of friction when the body is in motion
The angle between the normal reaction and the resultant of normal reaction and limiting friction
The force of friction at which the body is just about to move

Detailed SolutionThe angle of friction is: A. The ratio of the friction and the normal reaction B. The force of friction when the body is in motion C. The angle between the normal reaction and the resultant of normal reaction and limiting friction D. The force of friction at which the body is just about to move

3. Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature, A. Dip of the cable increases B. Length of the cable increases C. Dip of the cable decreases D. None of these

Dip of the cable increases
Length of the cable increases
Dip of the cable decreases
None of these

Detailed SolutionPick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature, A. Dip of the cable increases B. Length of the cable increases C. Dip of the cable decreases D. None of these

4. Pick up the incorrect statement from the following. In a simple harmonic motion A. Velocity is maximum at its mean position B. Velocity is minimum at the end of the stroke C. Acceleration is minimum at the end of the stroke D. Acceleration is zero at the mean position

Velocity is maximum at its mean position
Velocity is minimum at the end of the stroke
Acceleration is minimum at the end of the stroke
Acceleration is zero at the mean position

Detailed SolutionPick up the incorrect statement from the following. In a simple harmonic motion A. Velocity is maximum at its mean position B. Velocity is minimum at the end of the stroke C. Acceleration is minimum at the end of the stroke D. Acceleration is zero at the mean position

5. The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth’s surface A. Uneven distribution of the gravitational field B. Gravity of the sun and the moon C. Aerodynamic forces D. None of these

Uneven distribution of the gravitational field
Gravity of the sun and the moon
Aerodynamic forces
None of these

Detailed SolutionThe following factor affects the orbit of a satellite up to an altitude of 720 km from the earth’s surface A. Uneven distribution of the gravitational field B. Gravity of the sun and the moon C. Aerodynamic forces D. None of these

6. A cylinder will slip on an inclined plane of inclination angle $$\theta $$ if the coefficient of static friction between plane and cylinder is A. less than $$\frac{1}{3}\tan \theta $$ B. less than $$\frac{2}{3}\tan \theta $$ C. less than $$\frac{1}{3}\sin \theta $$ D. less than $$\frac{2}{3}\sin \theta $$

less than $$rac{1}{3} an heta $$
less than $$rac{2}{3} an heta $$
less than $$rac{1}{3}sin heta $$
less than $$rac{2}{3}sin heta $$

Detailed SolutionA cylinder will slip on an inclined plane of inclination angle $$\theta $$ if the coefficient of static friction between plane and cylinder is A. less than $$\frac{1}{3}\tan \theta $$ B. less than $$\frac{2}{3}\tan \theta $$ C. less than $$\frac{1}{3}\sin \theta $$ D. less than $$\frac{2}{3}\sin \theta $$

7. A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight A. Vertical component of velocity remains constant B. Horizontal component of velocity remains constant C. Speed of the ball remains constant D. Kinetic energy of the ball remains constant

Vertical component of velocity remains constant
Horizontal component of velocity remains constant
Speed of the ball remains constant
Kinetic energy of the ball remains constant

Detailed SolutionA ball which is thrown upwards, returns to the ground describing a parabolic path during its flight A. Vertical component of velocity remains constant B. Horizontal component of velocity remains constant C. Speed of the ball remains constant D. Kinetic energy of the ball remains constant

8. When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as A. Imaginary work B. Negative work C. Virtual work D. None of these

Imaginary work
Negative work
Virtual work
None of these

Detailed SolutionWhen a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as A. Imaginary work B. Negative work C. Virtual work D. None of these

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