Work and Energy

Question 1

Equations for springs

Hooke’s law vs potential energy of spring

Answer 1

Question 2

Define work

Answer 2

Question 3

Equation for vector calculation

Answer 3

Question 4

Equation of work as a sum of energy

Answer 4

Question 5

Equation for power

Answer 5

Question 6

Work-energy theorem

Answer 6

When energy transfer in a system affects only kinetic energy, net work equals change in kinetic energy.

Question 7

Equation for mechanical advantage

Answer 7

Question 8

Equation for mechanical advantage of inclined plane

Answer 8

Question 9

Equation for work of gas

Answer 9

Question 10

Defined as the capacity to do work. SI unit are Joules

Answer 10

Energy

Question 11

Equation for kinetic energy

Answer 11

Question 12

Equation for elastic potential energy

Answer 12

Question 13

Equation for Gravitational potential energy

Answer 13

Question 14

A force does work if

Answer 14

Question 15

Vector calculation

Dot product of force and displacement

Answer 15

Question 16

How to calculate power using work

Rate of work over time. Unit: Watt (J/s)

Answer 16

Question 17

What is the work-energy theorem

Answer 17

When energy transfer in a system affects only kinetic energy, net work equals change in kinetic energy.

Question 18

A machine multiplies input force by the mechanical advantage factor to accomplish work.

Equation for Mechanical advantage

Answer 18

Question 19

Mechanical advantage of inclined plane

Answer 19

Question 20

Equation for work of a gas

Answer 20

Question 21

Equation for work as a sum of energy

Answer 21