1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
4vir4ik [10]
3 years ago
7

Identify the varibles in the equation for determining the ideal mechanical advantage of a lever

Biology
1 answer:
Alecsey [184]3 years ago
3 0

In the case of a lever, the ideal mechanical advantage, or IMA, is the ratio of the length of the effort arm to the length of the load arm, or IMA = Le / Lr. The effort arm measures the distance from the force applied to the fulcrum, and the load arm measures the distance from the weight, or output force, to the fulcrum.

In the case of a wheel and axle, ideal mechanical advantage is the ratio of the radius of the wheel, R, to the radius of the axle, r. In short, IMA = R/r.

In the case of a pulley system, the ideal mechanical advantage is equal to the number of support strings, N. IMA = N. Alternatively, ideal mechanical advantage is equal to two times the number of movable pulleys.

In the case of an inclined plane, the ideal mechanical advantage is the ratio of the length traveled up the inclined plane, L, to the height difference, h. IMA = L/h.

In the case of a wedge, the ideal mechanical advantage is the ratio of the depth of penetration, L, to the length of the separation of wedged surfaces, t. IMA = L/t.

In the case of a screw, the mechanical advantage is the ratio of the circumference of the screw to the distance traveled after each revolution. In other words, IMA = 2*pi*L / P, where L is the radius of the screw and P is the distance traveled after each revolution.

The actual benefits of a simple machine when compared to its ideal mechanical advantage are reduced due to energy loss caused by friction. The efficiency measures how close a simple machine is to its ideal mechanical advantage. Efficiency is the ratio of the work supplied to the work put into the machine.

You might be interested in
Which of the following chemicals opens us binding sites allowing muscle filaments to connect to each other? Select one:
HACTEHA [7]

Answer:

The correct answer will be option-D.

Explanation:

Calcium plays an important role in muscle contraction as they are released from the sarcoplasmic reticulum after they receive electric impulse.

Calcium triggers the muscle contraction cycle as these calcium ions bind to the troponin-tropomyosin complex. This binding exposes the myosin-binding site on the actin on which high energy myosin binds and cross-bridge is formed.

This cross-bridge formation causes the contraction of the sarcomere and therefore muscle contracts.

Thus, option-D is the correct answer.

3 0
3 years ago
Birds use their beaks to rub their feathers with oil secreted by the?
mojhsa [17]
They dont release any oil 
they "preen" their feathers with their beaks not put oil on them 
3 0
3 years ago
A permeable rock that contains hydrocarbon fluids and gases is called a(n) ______.
geniusboy [140]
The world has the least amount of oil as for fuel. All oil traps contains an impermeable layer but a permeable rock that contains hydrocarbon fluids and gases is called a(n) oil reservoir. Whereas syncline is least likely to contain an oil trap. In U.S oil production is less than oil consumption.
5 0
3 years ago
What changes can be made to improve biodiversity?
Dmitriy789 [7]
Conservation and by recyclig we can improve biodiversity
5 0
3 years ago
Read 2 more answers
GIVING 20 POINTS PLEASE HELP ME ASAP!!!!!
igor_vitrenko [27]

Answer:

The Answer is gonna be D. There are fewer winds in summer to interfere with drying up puddles

4 0
3 years ago
Read 2 more answers
Other questions:
  • What kind of cells are in only plants
    12·1 answer
  • Which molecule enters the Calvin Cycle? Which molecule leaves?
    10·1 answer
  • !00 pointzzz<br> Help me nd yeahhh!! (see attachment)
    7·2 answers
  • Which of the following is not a part of an atp molecule
    6·1 answer
  • How many significant figures are in the measurement 50.003010 nm?
    13·1 answer
  • ¿El alcohol es una droga?Razona tu respuesta
    7·1 answer
  • Punnet squares help Fill in the Punnett square for breeding a female chocolate lab (bbEE) with a male black lab (BbEE). bE bE bE
    12·2 answers
  • Which of the following is a way that nitrogen atoms move from a nonliving part of the environment into a living part of the envi
    6·2 answers
  • A mouse runs 2 metres in 4 seconds. What is its speed?
    6·1 answer
  • Human embryonic development is the development and formation of the human embryo. It is characterized by the process of cell div
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!