Higher Study | Engineering Mechanics

Practice Higher Study | Engineering Mechanics on Bissoy — browse topics below and open any question.

Kinematics and Kinetics Frame Truss and Beam Equilibrium and Friction Impact and Virtual Work

Questions

If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

ক

$$\frac{{\text{g}}}{2}$$

খ

$$\frac{{\text{g}}}{3}$$

গ

$$\frac{{\text{g}}}{4}$$

ঘ

None of these

Non-coplanar non-concurrent forces are those forces which

ক

Meet at one point, but their lines of action do not lie on the same plane

খ

Do not meet at one point and their lines of action do not lie on the same plane

গ

Do not meet at one point but their lines of action lie on the same plane

ঘ

None of the above

Which is the correct statement about law of polygon of forces?

ক

If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

খ

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

গ

If a polygon representing forces acting at a point is closed then forces are in equilibrium

ঘ

If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

Which of the following do not have identical dimensions?

ক

Momentum and impulse

খ

Torque and energy

গ

Torque and work

ঘ

Moment of a force and angular momentum

Concurrent forces are those forces whose lines of action

ক

Lie on the same line

খ

Meet at one point

গ

Meet on the same plane

ঘ

None of these

A person who weighs 800 N steps onto a scale that is on the floor of an elevator car. If the elevator accelerates upward at a rate of 5 m/s2, what will the scale read?

ক

400 N

খ

800 N

গ

1,000 N

ঘ

1,200 N