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
Degger [83]
3 years ago
15

The ideal mechanical advantage of a machine reflects the increase or decrease in force there world be without friction, it is al

ways greater than the actual mechanical advantage because all machines must overcome friction.
options:
True
False
Physics
1 answer:
brilliants [131]3 years ago
8 0

True: the ideal mechanical advantage of a machine is always greater than the actual mechanical advantage because all machines must overcome friction.

Explanation:

For a simple machine, it is possible to calculate two types of mechanical advantage:

1) The Ideal Mechanical Advantage (IMA) is given by

IMA=\frac{d_e}{d_r}

where

d_r is the resistance arm

d_e is the effort arm

The IMA gives the mechanical advantage of the machine if there are no friction forces acting on it, and if all the work in input is converted into work in output with no loss of energy

2) The Actual Mechanical Advantage (AMA) is given by

AMA=\frac{L}{E}

where

L is the load (the force in output)

E is the effort (the force in input)

The AMA gives the real mechanical advantage of the machine. For an ideal machine,

AMA=IMA

Because there is no loss of energy due to friction.

For a real machine instead,

AMA

because part of the input energy is converted into thermal energy and other forms of energy due to the presence of friction, so it is "wasted" energy.

Learn more about levers and machines:

brainly.com/question/5352966

#LearnwithBrainly

You might be interested in
How are heat and light waves produced on and in the sun?
enyata [817]
All of the electromagnetic energy radiated from the sun (and from
other stars) is the product of nuclear fusion in its core.
8 0
2 years ago
Read 2 more answers
When a golf ball is hit, it travels at 41 meters per second. The mass of a golf ball is 0.045kg. Calculate the kinetic energy of
Fittoniya [83]

Answer:

  75.645 J

Explanation:

The kinetic energy is related to the mass and velocity by the formula ...

  KE = 1/2mv²

For the given mass of 0.045 kg, and velocity of 41 m/s, the kinetic energy is ...

  KE = 1/2(0.045 kg)(41 m/s)² = 75.645 J

__

The unit of energy, joule, is a derived unit equal to 1 kg·m²/s².

4 0
2 years ago
A 4kg book sits on a table and your pet hamster puts his front paws on the book and pushes down with a force of 3N. What is the
Natali [406]
There are three forces acting on the book. 
1. Force due to gravity
2. Force exerted downward by the hamster
3. Normal Force in reaction to the downward forces

Since the book is not moving, the net force is zero. The summation of all forces must be zero. Then we could find the normal force which is unknown (denoted as x).

∑F = -(4 kg)(9.81 m/s2) - 3 N + x =0
∑F = -39.24 N - 3N + x =0
x = 42 N

Therefore, the normal force is 42 N.
4 0
3 years ago
A 10 µf capacitor is charged to 108 v and is then connected across a 328 ω resistor. what is the initial charge on the capacitor
valina [46]
The capacitance is defined as the maximum charge stored in a capacitor, Q, divided by the voltage applied, V:
C= \frac{Q}{V}

The capacitor is initially charged with the battery of 108 V, so the the initial charge on the capacitor can be found by re-arranging the previous formula:
Q=CV=(10 \mu F)(108 V)=1080 \mu C
8 0
3 years ago
1.2
Alika [10]

Answer:

B

Explanation:

Because it has to increase

3 0
2 years ago
Read 2 more answers
Other questions:
  • An open container holds ice of mass 0.500kg at a temperature of -16.1?C . The mass of the container can be ignored. Heat is supp
    12·1 answer
  • Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC.
    9·2 answers
  • New ocean crust or sea floor is produced when tectonic plates _______.<br> diverge<br> converge
    14·1 answer
  • Scientific hypotheses, theories, and laws are all vital to the development of scientific ideas. They are all vital, but they are
    7·2 answers
  • Write a simple definition for an isotope
    15·1 answer
  • Compared to its weight on Earth, a 10-kg object on the moon will weigh Question 9 options: less. the same amount. more.
    6·2 answers
  • Two small plastic spheres each have a mass of 1.2 g and a charge of -56.0 nC . They are placed 3.0 cm apart (center to center).
    11·1 answer
  • How to calculate motion​
    8·2 answers
  • What does the symbol 'Mg' represent?​
    13·2 answers
  • The force F is expressed in terms of the mass “m” and acceleration “a” according to the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!