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
Anettt [7]
3 years ago
9

In the example given below, Aaron applies a force of 300N and Bob applies a force of 450N :

Physics
1 answer:
garri49 [273]3 years ago
3 0

Answer:

Explanation:

This problem is all about torque. The "rules" are that in order for a system to be in rotational equilibrium, the sum of the torques on the system have to equal 0 (in other words, they have to equal each other {cancel each other out}). The equation for torque is

τ = F⊥r where τ is torque, F⊥ is the perpendicular force, and r is the lever arm length in meters. We also have to understand that in general Forces moving clockwise are negative and Forces moving counterclockwise are positive. Now we're ready for the problem:

A. The counterclockwise torque:

τ = 300(3) so

τ = 900N*m

B. The clockwise torque:

τ = -450(2.5) so

τ = -1100N*m

C. Obviously the system is not in roational equilibrium because one side is experiencing a greater torque than the other. This system will move clockwise as it currently exists.

D. In order for the system to be in rotational equilibrium, we have to move Bob's location from the fulcrum. Let's see to where.

The torques have to be the same on both sides of the fulcrum; mathematically, that looks like this:

F⊥r = F⊥r  Filling in:

300(3) = 450r and

900 = 450r so

2 = r. This means that Bob will have to move closer to the fulcrum by a half of a meter to 2 meters from the fulcrum in order for the system to be in balance.

Isn't this so much fun?!

You might be interested in
The Tour de France is the biggest bicycle race in the world. The race lasts for three weeks and is one of the biggest sporting e
avanturin [10]

Answer:

Yellow, green, polka dot and white jerseys

Explanation:

Tour de France is the biggest bicycle race in the world held at France over a period of 23 days. At the end of each day of racing they give to the certain riders FOUR different colored jerseys:

  1. The yellow jersey is given to the overall winner at each stage, this shows the rider who was the best in the previous stage.
  2. The green jersey is given to the best sprinter of each stage,
  3. The polka dot jersey is given to the rider who first reach the crest of designated hills and mountains at each stage.
  4. The white jersey is given to the fastest rider at each stage under 25 years at the beginning of the racing year.

At the end of the competition, the total points are counted and the different jerseys are given to the overall winners.

5 0
3 years ago
Which transfer of energy occurs mainly through the process of convection?
Olegator [25]
Heat due to the amount of density difference within a fluid
4 0
3 years ago
A shield of material that reflects neutrons is placed around a radioactive sample. Which change in the nuclear reaction is most
Crazy boy [7]

Answer:

A chain reaction will be sustained in a sub-critical mass.

Explanation:

Hope this helps!

If not, I am sorry.

3 0
1 year ago
A theory is a way of explaining observations. true or false.
Natasha_Volkova [10]
I think its true. hope this helps.
5 0
3 years ago
Read 2 more answers
A person has long hair hanging straight down from their head. A second person rubs a balloon with felt so that the balloon is ne
Vedmedyk [2.9K]

Answer:

<em>The best explanation is that the first person is grounded to the earth, and his/her body either draws up negative charges from the earth, or tend to conducts negative charges to the earth, depending on the charge on the balloon.</em>

Explanation:

The earth is an infinite store for charges. In the first case where the second person brings a negatively charged balloon towards the first person, the negative charges on the balloon induces the first person's body to tend to attract the negative charges on the balloon through the first person's body to the positive charges within the earth. In the second case when again a positively charged balloon is brought near the first person's hair, the positive charges on the balloon induce the first person's body into drawing up negative charges from within the earth. This charges, and their opposite induced charges, create an attractive force between the hair strands and the balloons.

4 0
3 years ago
Other questions:
  • After a party the host pours the remnants of several bottles of wine into a jug. He then inserts a cork with a 2.25-cm diameter
    9·1 answer
  • In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the sys
    14·1 answer
  • Average velocity is different than average speed because calculating average velocity involves
    9·2 answers
  • a stone is vertically thrown upward with the velocity of 72km/hr find the maximum height reached the height​
    12·1 answer
  • Express each of the following in ms -1 <br>a) 18kmh-1<br>​
    14·1 answer
  • A 1,500 kg truck is towed sideways out of a mud-hole with a force of 15,000 N. How much acceleration is required for the tow tru
    8·1 answer
  • Which of the following values has the greatest number of significant figures? Justify your answer?
    8·1 answer
  • What makes up the unit joules?​
    13·1 answer
  • A 15 g ball at the end of 2.4 m string is swung in the horizontal circle. It revolves once every 2.09 s. What is the magnitude o
    7·1 answer
  • The very strong source of radio waves at the center of our galaxy is called.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!