Quick Hello Then Question About Energy

[Celestial_Morning]

Hey,

Im A Highschool Student; Nerd In Development; lol anyways iv'e come across this question in my Text Book and I am not sure how to figgure it out; Can Someone PLEASE for the love of god tell me how the hell to do it

Ok Heres The Status They Give You:

Mass - 2kG
Angle - 60
Force - 100N
Friction Force- 10N

How long will it take to push this bucket over A Distance Of 5 Meaters?






Back Of Book Answer= 0.71s


Thanks
~Matty-Alan~

 

[Astronuc]

Hey,

Im A Highschool Student; Nerd In Development; lol anyways iv'e come across this question in my Text Book and I am not sure how to figgure it out; Can Someone PLEASE for the love of god tell me how the hell to do it

Ok Heres The Status They Give You:

Mass - 2kG
Angle - 60
Force - 100N
Friction Force- 10N

How long will it take to push this bucket over A Distance Of 5 Meaters?

One should show one's work first.

Well, one needs to know the initial velocity, which may = 0 here.

If there is a net acceleration, then the block is accelerating.

The net acceleration is simply the net force divided by mass.

Now, if one pushes the block, then friction opposes the pushing, i.e. the friction force is in the opposite direction of the pushing force.

As for the pushing force, one must determine the component parallel with the displacement of 5 meters (presumably horizontal, but that is not given in the problem statement). Furthermore, with respect to the angle of 60°, it is not stated whether that is with respect of vertical or horizontal. And does the friction force of 10N apply simply to the mass of the block, or to the block plus whatever downward force one applies to the block.

Then think of the equation which describes displacement as a function of time for constant acceleration. Hint, it is a quadratic relationship.

This might help - http://hyperphysics.phy-astr.gsu.edu/Hbase/mot.html#mot1

 

[kyle8921]

Hello Matty-Alan,

It's great to hear that you are interested in science and are trying to solve this question from your textbook. Let's break down the problem and see if we can figure it out together.

First, we need to understand the concept of energy. Energy is the ability to do work, and it comes in different forms such as kinetic energy (energy of motion), potential energy (stored energy), and thermal energy (heat). In this problem, we are dealing with kinetic energy as the bucket is being pushed.

Next, we need to understand the forces acting on the bucket. The force of 100N is being applied to the bucket at an angle of 60 degrees. We also have a friction force of 10N acting in the opposite direction of the motion.

To solve for the time it takes to push the bucket over 5 meters, we can use the equation: time = distance/velocity. In this case, we need to find the velocity of the bucket.

To find the velocity, we can use the equation: force = mass x acceleration. Since we know the force of 100N and the mass of 2kg, we can solve for the acceleration. Then, we can use the equation: velocity = initial velocity + acceleration x time to solve for the velocity.

Once we have the velocity, we can plug it into the first equation to solve for time.

I hope this helps you understand how to approach this problem. Remember, in science, it's important to break down the problem and use equations to solve for the unknown variables. Keep up the good work and keep asking questions!