Worksheets7/5 Engineering and Manufacturing (Level 3) Objectives
Total questions: 9
Worksheet time: 5mins
Explain the difference between mechanical work, energy, and power.
Mechanical work is the energy transferred by a force, energy is the capacity to do work, and power is the rate of doing work.
Mechanical work is the rate of doing work, energy is the energy transferred by a force, and power is the capacity to do work.
Mechanical work is the capacity to do work, energy is the rate of doing work, and power is the energy transferred by a force.
Mechanical work is the energy transferred by a force, energy is the rate of doing work, and power is the capacity to do work.
Outline D’Alembert's principle.
D'Alembert's principle is a statement of the conservation of momentum.
D'Alembert's principle is a method for solving differential equations.
D'Alembert's principle is a technique for analyzing static equilibrium.
D'Alembert's principle is a reformulation of Newton's second law.
What is the formula for work done when a force acts on an object?
work done = force + distance
work done = force × distance moved in the direction of the force
work done = force / distance
work done = distance - force
Fill in the blank: Mechanical energy is the sum of the KE (energy of motion) and ___ (stored energy of position) of an object.
PE
KE
TE
NE
Power is the rate at which ______ is done or the rate at which energy is transferred.
work
force
momentum
velocity
What is the standard SI unit of power?
Joule (J)
Watt (W)
Newton (N)
Volt (V)
What is D’Alembert’s principle also known as?
Newton's first law
Lagrange–d’Alembert principle
Principle of inertia
Principle of relativity
D’Alembert’s principle is explained in the context of Newton’s second law as:
A method to convert a dynamic problem into a static problem
A principle that states the sum of forces is zero
A law of motion that describes the relationship between an object's motion and the forces acting on it
A principle that explains the conservation of energy
According to D’Alembert’s principle, what is the sum of the differences between the forces exerted on a system of particles and the time derivatives of the momenta of the system when projected into virtual displacement?
Zero
One
Infinity
Negative
