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
nikitadnepr [17]
3 years ago
8

A 52–newton bird feeder is tied to a cord, which is attached to a tree branch. Describe the tension force of the rope.

Physics
2 answers:
Sloan [31]3 years ago
7 0

Answer:

option C. for plato users

a 52–newton tension force pulls down on the branch, and a 52–newton tension force pulls up on the bird feeder.

Explanation:

got 100 on the test :)

iris [78.8K]3 years ago
4 0
If you are given a 52 Newton bird feeder tied to a cord, it means that it has a weight of 52 Newton. Since the bird feeder is not moving, we assume it to exert a force downward, that is its weight, and the cord that ties it, the force is upward. This upward force is the tension and is therefore equal to 52N.
You might be interested in
A bicycle rider pushes a 13kg bicycle up a steep hill. the incline is 24 degree and the road is 275m long. the rider pushes the
Digiron [165]

Answer:

A. W = 6875.0 J.

B. W = -14264.6 J.

Explanation:

A. The work done by the rider can be calculated by using the following equation:

W_{r} = |F_{r}|*|d|*cos(\theta_{1})

Where:                

F_{r}: is the force done by the rider = 25 N

d: is the distance = 275 m

θ: is the angle between the applied force and the distance

Since the applied force is in the same direction of the motion, the angle is zero.

W_{r} = |F_{r}|*|d|*cos(0) = 25 N*275 m = 6875.0 J

Hence, the rider does a work of 6875.0 J on the bike.

B. The work done by the force of gravity on the bike is the following:

W_{g} = |F_{g}|*|d|*cos(\theta_{2})  

The force of gravity is given by the weight of the bike.

F_{g} = -mgsin(24)     

And the angle between the force of gravity and the direction of motion is 180°.

W_{g} = |mgsin(24)|*|d|*cos(\theta_{2})  

W_{g} = 13 kg*9.81 m/s^{2}*sin(24)*275 m*cos(180) = -14264.6 J  

The minus sign is because the force of gravity is in the opposite direction to the motion direction.

Therefore, the magnitude of the work done by the force of gravity on the bike is 14264.6 J.  

I hope it helps you!                                                                                          

3 0
2 years ago
You may have noticed runaway truck lanes while driving in the mountains. These gravel-filled lanes are designed to stop trucks t
Sladkaya [172]

Answer:

0.767

Explanation:

The work done on the truck by the frictional drag force is given by

W=-Fd

where

F is the magnitude of the frictional force

d = 38.0 m is the maximum displacement allowed for the truck

The negative sign is due to the fact that the force of friction is opposite to the motion of the truck

The force of friction can also be written as:

F=\mu mg

where

\mu is the coefficient of kinetic friction between the truck and the lane

m is the mass of the truck

g is the acceleration of gravity

So we can rewrite the work done as

W=-\mu mg d (1)

According to the work-energy theorem, the work done by friction is equal to the change in kinetic energy of the truck:

W=K_f - K_i = \frac{1}{2}mv^2-\frac{1}{2}mu^2 (2)

where

v = 0 is the final velocity of the truck

u = 23.9 m/s is the initial velocity of the truck

By combining (1) and (2) we get

-\frac{1}{2}mu^2 = -\mu mg d

And solving for \mu, we find the minimum coefficient of kinetic friction able to stop the truck in a distance d:

\mu = \frac{u^2}{2gd}=\frac{23.9^2}{2(9.8)(38.0)}=0.767

7 0
3 years ago
The interstellar medium is composed of ________.
PolarNik [594]
THE INTERSTELLAR MEDIUM COMPOSED GAS AND DUST  
3 0
3 years ago
A 1300-kg car initially has a velocity of 22.2 m/s due south. It brakes to a stop over a 180 m distance.
Vaselesa [24]
The acceleration of the object which moves from an initial step to a full halt given the distance traveled can be calculated through the equation,
                                     d = v² / 2a
where d is distance, v is the velocity, and a is acceleration
Substituting the known values,
                                     180 = (22.2 m/s)² / 2(a)
The value of a is equal to 1.369 m/s²
The force needed for the object to be stopped is equal to the product of the mass and the acceleration.
                                      F = (1300 kg)(1.369 m/s²) 
                                            F = 1779.7 N
4 0
3 years ago
What did kind of energy did the ruler gain when you bent it with your left hand? why?
Alex787 [66]

Answer:

potential energy

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • A new object, Object Z, was discovered outside our solar system. Object Z is made of frozen gases that surround a rocky core and
    7·2 answers
  • Define dry cell? Pls tell me ASAP!
    8·1 answer
  • The kinetic energy of a ball with the mass of 0.5 kg and a velocity of 10 m/s is what
    14·1 answer
  • a girl that has a mass of 55kg is standing on a floor, how much supporting force does the floor have?
    8·1 answer
  • An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fab
    7·2 answers
  • Has anyone done this i need answers
    10·2 answers
  • Clara made a chart to summarize some of the evidence that supports the big bang theory.
    12·2 answers
  • How many licks dose it take to eat a lolipop
    11·2 answers
  • If I am lifting a box with a force of 100 N and the box has an acceleration of 10 N, what is the mass of the box?
    14·1 answer
  • 5, the following equation shows the position of a particle in time t, x=at2i + btj where t is in second and x is in meter. A=2m/
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!