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Engineering-mechanics Questions Set 16:

Quiz Mode

If a square lamina is freely suspended from a corner, what is the angle made by its side with the horizontal?

180°

90°

45°

60°

Solution:

Two forces are acting at an angle of 120°. The larger force is 80N and the resultant is perpendicular to the smaller one. What is the magnitude of the smaller force?

20N

40N

80N

100N

Solution:

What does the term 'virtual work' refer to?

Virtual work done by virtual forces

Virtual work done by actual forces

Actual work done by actual forces

Actual work done by virtual forces

Solution:

What angle should an athlete make with the ground to achieve the longest possible jump?

90 degrees with the ground

60 degrees with the ground

45 degrees with the ground

30 degrees with the ground

Solution:

The position vector of a particle is given by 8ti – 1.2t2j - 0.5(t3-1)k, when t = 4 sec, determine the power developed in W by the force 40i-20j -36k in kN which acts on a particle.

1000

788

992

925

Solution:

The piston of a steam engine moves with simple harmonic motion. The crank rotates at 120 rpm with a stroke of 2 metres. Find the velocity of the piston when it is at a distance of 0.75 metre from the centre.

8.31 m/s

10.42 m/s

9.45 m/s

5.42 m/s

Solution:

Which of the following statements about forces and couples is false?

Resultant and equilibrant are equal in magnitude and direction

Parallelogram law is to be proved experimentally

Resultant of a couple is always zero

Moment of couple is free vector

Solution:

A closely coiled helical spring with a length of 15 cm and a mean diameter of 15 cm has 20 coils of a 1.5 cm diameter rod. The modulus of rigidity of the material is 10⁷ N/cm². What is the stiffness of the spring in N/cm?

54 N/cm

60.87 N/cm

93.75 N/cm

100 N/cm

Solution:

A particle of mass 2kg is travelling at a velocity of 1.5 m/s. A force f(t) = 3t² (in N) is applied to it in the direction of motion for a duration of 2 seconds, where t denotes time in seconds. The velocity (in m/s, up-to 1 decimal place) of the particle immediately after the removal of the force is____.

Solution:

Which statement is correct for the conservative force vector F = Ai + Bj + Ck?

In rectangular components representation of any vector, we have vector F = Fi + Fj + Fk

In rectangular components representation of any vector, we have vector F = Ai + Bj + Ck

In rectangular components representation of any vector, we have vector F = Fx + Fy + Fz

In rectangular components representation of any vector, we have vector F = Ax + By + Cz

Engineering-mechanics Questions Set 16:

If a square lamina is freely suspended from a corner, what is the angle made by its side with the horizontal?

Solution:

Two forces are acting at an angle of 120°. The larger force is 80N and the resultant is perpendicular to the smaller one. What is the magnitude of the smaller force?

Solution:

What does the term 'virtual work' refer to?

Solution:

What angle should an athlete make with the ground to achieve the longest possible jump?

Solution:

The position vector of a particle is given by 8ti – 1.2t2j - 0.5(t3-1)k, when t = 4 sec, determine the power developed in W by the force 40i-20j -36k in kN which acts on a particle.

Solution:

The piston of a steam engine moves with simple harmonic motion. The crank rotates at 120 rpm with a stroke of 2 metres. Find the velocity of the piston when it is at a distance of 0.75 metre from the centre.

Solution:

Which of the following statements about forces and couples is false?

Solution:

A closely coiled helical spring with a length of 15 cm and a mean diameter of 15 cm has 20 coils of a 1.5 cm diameter rod. The modulus of rigidity of the material is 10⁷ N/cm². What is the stiffness of the spring in N/cm?

Solution:

Solution:

Which statement is correct for the conservative force vector F = Ai + Bj + Ck?

Solution:

Related Question Sets:

Related Topics:

Engineering-mechanics Questions Set 16:

If a square lamina is freely suspended from a corner, what is the angle made by its side with the horizontal?

Solution:

Two forces are acting at an angle of 120°. The larger force is 80N and the resultant is perpendicular to the smaller one. What is the magnitude of the smaller force?

Solution:

What does the term 'virtual work' refer to?

Solution:

What angle should an athlete make with the ground to achieve the longest possible jump?

Solution:

The position vector of a particle is given by 8ti – 1.2t2j - 0.5(t3-1)k, when t = 4 sec, determine the power developed in W by the force 40i-20j -36k in kN which acts on a particle.

Solution:

The piston of a steam engine moves with simple harmonic motion. The crank rotates at 120 rpm with a stroke of 2 metres. Find the velocity of the piston when it is at a distance of 0.75 metre from the centre.

Solution:

Which of the following statements about forces and couples is false?

Solution:

A closely coiled helical spring with a length of 15 cm and a mean diameter of 15 cm has 20 coils of a 1.5 cm diameter rod. The modulus of rigidity of the material is 107 N/cm2. What is the stiffness of the spring in N/cm?

Solution:

Solution:

Which statement is correct for the conservative force vector F = Ai + Bj + Ck?

Solution:

Related Question Sets:

Related Topics:

A closely coiled helical spring with a length of 15 cm and a mean diameter of 15 cm has 20 coils of a 1.5 cm diameter rod. The modulus of rigidity of the material is 10⁷ N/cm². What is the stiffness of the spring in N/cm?