samanthacruzsc51
24.12.2020 •
Physics
HELP ASAP WILL GIVE BRAINLIEST!
What is a centrosome and what does it do?
Solved
Show answers
More tips
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
Answers on questions: Physics
- P Physics A hockey puck with a mass of 0.17 kg is traveling to the right along the ice at 15 m/s. It strikes a second hockey puck with a mass of 0.11 kg. The first hockey puck comes...
- P Physics What is the biggest disadvantage of using nuclear power to produce electricity? A. Nuclear fission releases more air pollution than burning coal. B. Nuclear fission produces...
- P Physics A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.9 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown...
- P Physics What are (a) the length of the rope, (b) the speed of the waves on the rope, and (c) the mass of the rope? (d) If the rope oscillates in a third-harmonic standing wave pattern,...
- P Physics An object moving at a constant velocity will always have a ....
- P Physics Help please what is the net acceleration of a 9 kg block that is being pulled with a horizontal 67 N force if there is a frictional force of 6 N acting on the block? Give your...
- P Physics A force of 147 N pushed a rock off a cliff causing it to have an acceleration of 3 m/s2.What was the mass of the falling rock?...
- P Physics It is a hot day, and Dina and Alex decide to set up a lemonade stand. They scout the neighborhood and locate the spot with the most foot traffic They bicker about how much...
- M Mathematics Y=2x+5 solve for y and x...
- B Biology Non-mendelian punnett squares incomplete dominance: Lets say eye color in frogs depends upon incomplete dominance. Frogs can either have blue eyes, yellow eyes or green eyes....
Ответ:
Ответ:
a. The object can have zero acceleration and, simultaneously, nonzero velocity.
c. The object can have nonzero velocity and nonzero acceleration simultaneously.
d. The object can have zero velocity and, simultaneously, nonzero acceleration.
Explanation:
For an object in simple harmonic motion, the total mechanical energy (sum of elastic potential energy and kinetic energy) is constant:
(1)
where
k is the spring constant
x is the displacement
m is the mass
v is the speed
We can also notice that the force on the spring is given by Hook's law:
And since according to Newton's law we have F = ma, this can be rewritten as
which means that the acceleration is proportional to the displacement.
So by looking again at eq.(1), we can now states that:
- when the displacement is zero, x=0, the acceleration is zero, a=0, and the velocity is maximum
- when the velocity is zero, v=0, the acceleration is maximum, which occurs when the displacement is maximum
- in all the other intermediate situations, both velocity and acceleration are non-zero
So the correct answers are
a. The object can have zero acceleration and, simultaneously, nonzero velocity.
c. The object can have nonzero velocity and nonzero acceleration simultaneously.
d. The object can have zero velocity and, simultaneously, nonzero acceleration.