Science 8-2: Mechaincal Systems Section 2.0 Questions
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Last updated over 4 years ago
9 questions
1
Describe a situation where a person exerts force yet does no work.
Describe a situation where a person exerts force yet does no work.
2
Calculate the work done when a person pulls a sled with a force of 300 N over a distance of 5 meters.
Calculate the work done when a person pulls a sled with a force of 300 N over a distance of 5 meters.
2
Using the information provided calculate the Mechanical Advantage and Speed Raio for a lever that has the characteristcs provided in the question.
Using the information provided calculate the Mechanical Advantage and Speed Raio for a lever that has the characteristcs provided in the question.
4
Consider the lever in questions 3:a) How do the speed ratio and the mechaincial advantage compare?
b) Explain why the speed ratio and the mechanical advantage can never be the same.
Consider the lever in questions 3:
a) How do the speed ratio and the mechaincial advantage compare?
b) Explain why the speed ratio and the mechanical advantage can never be the same.
4
Describe a situation where yopu would use a machine with the following features:a) a mechanical advantage less than 1
b) a mechanical advantage more than 1
Describe a situation where yopu would use a machine with the following features:
a) a mechanical advantage less than 1
b) a mechanical advantage more than 1
2
When you are riding a bike up a steep hill, would you choose a gear that had the hihest gear ration or the highest mechanical advantage? Explain your answer.
When you are riding a bike up a steep hill, would you choose a gear that had the hihest gear ration or the highest mechanical advantage? Explain your answer.
2
Calculate the pressure on the fluid in a hydraulic jack that has a piston area of 16cm3 and to which you apply a force of 400 N.
Calculate the pressure on the fluid in a hydraulic jack that has a piston area of 16cm3 and to which you apply a force of 400 N.
4
Describe the relationship between the following:a) the pressure in a hydraulic system and the surface area of the pistons
b) the force in a hydraulic system and the surface area of the pistons
Describe the relationship between the following:
a) the pressure in a hydraulic system and the surface area of the pistons
b) the force in a hydraulic system and the surface area of the pistons
4
A hydraulic system consists of two pistons connected by a short flexible tube with a diameter of 0.5 cm. The connecting tube was then replaced with one that had a smaller diameter. What effect would this have on the performance of the hydraulic system?
A hydraulic system consists of two pistons connected by a short flexible tube with a diameter of 0.5 cm. The connecting tube was then replaced with one that had a smaller diameter. What effect would this have on the performance of the hydraulic system?