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
jolli1 [7]
3 years ago
6

in the derivation of the time period of a pendulum in electric field when considering the fbd of bob to find the g effective why

do we neglect tension
Physics
1 answer:
Neko [114]3 years ago
8 0

Answer:

we learned that an object that is vibrating is acted upon by a restoring force. The restoring force causes the vibrating object to slow down as it moves away from the equilibrium position and to speed up as it approaches the equilibrium position. It is this restoring force that is responsible for the vibration. So what forces act upon a pendulum bob? And what is the restoring force for a pendulum? There are two dominant forces acting upon a pendulum bob at all times during the course of its motion. There is the force of gravity that acts downward upon the bob. It results from the Earth's mass attracting the mass of the bob. And there is a tension force acting upward and towards the pivot point of the pendulum. The tension force results from the string pulling upon the bob of the pendulum. In our discussion, we will ignore the influence of air resistance - a third force that always opposes the motion of the bob as it swings to and fro. The air resistance force is relatively weak compared to the two dominant forces.

The gravity force is highly predictable; it is always in the same direction (down) and always of the same magnitude - mass*9.8 N/kg. The tension force is considerably less predictable. Both its direction and its magnitude change as the bob swings to and fro. The direction of the tension force is always towards the pivot point. So as the bob swings to the left of its equilibrium position, the tension force is at an angle - directed upwards and to the right. And as the bob swings to the right of its equilibrium position, the tension is directed upwards and to the left. The diagram below depicts the direction of these two forces at five different positions over the course of the pendulum's path.

that's what I know so far

You might be interested in
What is the value of side "a" in the triangle shown below? (1 point)
Oksi-84 [34.3K]

Answer: 5

Explanation:

5 0
3 years ago
A 1.0-cm-diameter pipe widens to 2.0, then narrows to 0.5. Liquid flows through the first segment at a speed of 4.0. What is the
uysha [10]

Answer:

3.14 ×  10⁻⁴  m³  /s

Explanation:

The flow rate (Q) of a fluid is passing through different cross-sections remains of pipe always remains the same.

Q = Area x velocity

Given:

Diameters of 3 sections of the pipe are given as  

d1  =  1.0  cm,  d2  =  2.0  cm  and  d3  =  0.5  cm.

Speed in the first segment of the pipe is  

v1  =  4  m/s.

From the equation of continuity the flow rate through different cross-sections remains the same.

Flow  rate  =  Q  =  A1  v1  =  A2  v2  =  A3  v3.

Q = A1v1

   =π/4  d²1  v1  =  π/4  * 0.01² ×4.0 m³/s  =  3.14 ×  10⁻⁴  m³  /s

3 0
3 years ago
What would the kinetic energy and potential energy be with the snowboarder, before during and after a jump?
Reika [66]

Answer: Before the jump, the snowboarder would carry potential energy.

During the jump he will carry kinetic energy.

And after the jump, assuming hes at a full stop, he will carry potential energy once again.

3 0
3 years ago
The reaction is at dynamic equilibrium.
DiKsa [7]

Answer:

Nitrogen and hydrogen combine at the same rate that ammonia breaks down.

Explanation:

7 0
3 years ago
A weightlifter can lift 220lbs. (assume 1kg weighs 2.2lbs) If he lifts the weight 2m above the floor, how much work did he do?
Anton [14]
Convert 220 lb to kg.

220/2.2 = 100kg.

W = Fd (In this case, F is the weight)
W = (100)(2)
W = 200J

P = W/t
P = (200)/(1.2)
P = 166.67W
5 0
3 years ago
Other questions:
  • In an emergency, a driver brings a car to a full stop in 5.0s. The car is traveling at a rate of 38m/s when the breaking begins.
    14·1 answer
  • What is the pressure amplitude for the threshold of human hearing?
    5·2 answers
  • Two identical satellites orbit the earth in stable orbits. one satellite orbits with a speed v at a distance r from the center o
    8·1 answer
  • A piece of soft iron is placed in a solenoid increasing the magnetic field in an arrangement that can be switched on and off. Su
    13·1 answer
  • The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a d
    10·1 answer
  • Jay fills a wagon with sand (about 20 kg) and pulls it with a rope 40 m along the beach. He holds the rope 25â above the horizon
    11·1 answer
  • How high must you lift a 25 Newton book for it to have the same increase in potential energy as a 20 Newton book that was lifted
    12·1 answer
  • What do we call the energy that is transferred to
    12·1 answer
  • Find the distance travelled when the initial angular velocity is 3rad/s the final angular velocity is 25rad/s and the time of mo
    10·1 answer
  • Explain why the rocket can move at constant speed in outer space.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!