
Calculating Velocity Ratio and Effort in Mechanics

Interactive Video
•
Mathematics, Physics, Science
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two main questions addressed in the video?
Calculating velocity ratio and mechanical advantage
Calculating velocity ratio and effort with given efficiency
Calculating effort and load
Calculating mechanical advantage and load
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you determine the velocity ratio?
By measuring the length of the strings
By measuring the distance between pulleys
By counting the number of strings or pulleys
By calculating the weight of the load
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for efficiency?
Efficiency = Load / Effort
Efficiency = Velocity Ratio / Mechanical Advantage
Efficiency = Mechanical Advantage / Velocity Ratio x 100%
Efficiency = Effort / Load x 100%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the velocity ratio is 5 and efficiency is 80%, what is the mechanical advantage?
6
8
5
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in calculating effort when given efficiency?
Calculate the velocity ratio
Find the load
Use the efficiency formula to find mechanical advantage
Convert mass to weight
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert mass to weight in this context?
Multiply by 5
Multiply by 10
Divide by 10
Add 10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final calculated effort if the load is 2000 newtons and mechanical advantage is 4?
700 newtons
400 newtons
500 newtons
600 newtons
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