It’s the increased mechanical advantage (IMA) of a block and tackle system that makes for easier lifting, and the IMA of a block and tackle is determined by the number of times the rope passes through the pulleys. One pulley is equal to one advantage, two pulleys is equal to two advantages, etc.

A simple way to determine the ideal mechanical advantage to a pulley system is to count the number of lengths of rope between pulleys that support the load. In Figure 1(a), only one segment of rope supports the load. Therefore, the mechanical advantage is 1.

Mechanical Advantage of Pulleys In a pulley, the ideal mechanical advantage is equal to the number of rope segments pulling up on the object. The more rope segments that are helping to do the lifting work, the less force that is needed for the job.

In general, the IMA = the resistance force, Fr, divided by the effort force, Fe. IMA also equals the distance over which the effort is applied, de, divided by the distance the load travels, dr.

To calculate the ideal mechanical advantage for an inclined plane, divide the length of the incline by the height of the incline. Example: An inclined plane that is 6 meters long and 3 meters high creates an ideal mechanical advantage of 2. The inclined plane increases the force that is being exerted by 2 times.

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.

overall efficiency is = (power generated(calculated from voltage and current values) + mechanical power generated from the turbine (Pmech= torque * angular speed)) / (the total net power introduced into the system which is the heater’s power).

We can calculate work by multiplying the force by the movement of the object. W = F × d. Unit. The SI unit of work is the joule (J)

Or, W = [M1 L1 T-2] × [M0 L1 T0] = [M1 L2 T-2]. Therefore, work is dimensionally represented as [M1 L2 T-2].

Work can be calculated with the equation: Work = Force × Distance.

Important Time and Work Formula Work Done = Time Taken × Rate of Work. Rate of Work = 1 / Time Taken. If a piece of work is done in x number of days, then the work done in one day = 1/x. Total Wok Done = Number of Days × Efficiency.

To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.

To calculate one of the variables (speed, distance or time) we need the other two. For example, to find the time taken to make a journey, we need the length of the journey and the speed of travel….Rearranging the formula

1. speed = distance ÷ time.
2. distance = speed × time.
3. time = distance ÷ speed.

Here are seven-steps for an effective problem-solving process.

1. Identify the issues. Be clear about what the problem is.
2. Understand everyone’s interests.
3. List the possible solutions (options)
4. Evaluate the options.
5. Select an option or options.
6. Document the agreement(s).
7. Agree on contingencies, monitoring, and evaluation.

To solve a work word problem, multiply the hourly rate of the two people working together by the time spent working to get the total amount of time spent on the job. Knowledge of solving systems of equations is necessary to solve these types of problems. Example: Latisha and Ricky work for a computer software company.

Where: d represents distance. r is an object’s rate (speed) t is the time the object takes to travel.

The steps for solving a numeric word problem are analyze, calculate, and evaluate. What are the steps of solving nonnumeric problems? The steps for solving a nonnumeric problem are analyze and solve.

The two general steps in successful problem solving are (1) developing a plan and (2) implementing that plan. The two steps for solving conceptual problems are (1) analyze and (2) solve.

What are the three steps for solving numeric problems? The steps for solving a numeric word problem are analyze, calculate, and evaluate. To solve a word problem, you must first determine where you are starting from (identify what is known) and where you are going (identify the unknown).

What are two skills that you may need to use as you calculate an answer to a problem?…

• Analyze.
• Calculate.
• Evaluate.

Effective problem solving is one of the key attributes that separate great leaders from average ones.

1. Step 1: Identify the Problem.
2. Step 2: Analyze the Problem.
3. Step 3: Describe the Problem.
4. Step 4: Look for Root Causes.
5. Step 5: Develop Alternate Solutions.
6. Step 6: Implement the Solution.
7. Step 7: Measure the Results.

Problem-solving skills help you determine why an issue is happening and how to resolve that issue. It’s one of the key skills that employers seek in job applicants. Problem-solving starts with identifying the issue, coming up with solutions, implementing those solutions, and evaluating their effectiveness.

Showing your Problem solving skills on your CV: You need to think of examples of when you have seen a problem and put in a fix that has made it better. Think about different situations you have been in : in school, college, university, in work experience, in team sports or clubs, volunteering or in your personal life.

8 job skills you should have

• Communication.
• Teamwork.
• Problem solving.
• Initiative and enterprise.
• Planning and organising.
• Self-management.
• Learning.
• Technology.

Problem-solving abilities are connected to a number of other skills, including:

• analytical skills.
• innovative and creative thinking.
• a lateral mindset.
• adaptability and flexibility.
• level-headedness.
• initiative.
• resilience (in order to reassess when your first idea doesn’t work)

Answer Example “I am a great problem solver because I can compartmentalize all aspects of a problem before studying it. I also like to bring more experienced team members in to add to the solution. I will never try to be a hero and solve a complicated problem without tapping into the resources around me.”