Physics Homework: Finding Mass of Block with Applied Force and Acceleration

  • Thread starter Thread starter yogoes123
  • Start date Start date
  • Tags Tags
    Forces Physics
AI Thread Summary
To find the mass of the block being pushed with a 150N force and accelerating at 2.53m/s², the coefficient of kinetic friction is 0.15. The frictional force can be calculated using the formula F(friction) = F(gravity) * 0.15. A free body diagram is recommended to visualize the forces acting on the block, including the applied force and frictional force. The key equation to use is F = ma, where the net force is the difference between the applied force and the frictional force. The correct mass of the block is determined to be 38kg.
yogoes123
Messages
11
Reaction score
0

Homework Statement



Block is pushed across a horizontal surface with a coefficient of kinetic friction of 0.15 by applying a 150N horizontal force

the block accelerates at a rate of 2.53m/s^2 find the mass of the block

Homework Equations



Uf=ff/fn f=ma

The Attempt at a Solution



0.15=?/fn f=m2.53


I tried crazy solutions but no progress

The TB answer is 38kg. I have no idea what this 150N of force is, i tried using it as the net force or frictional force but it didnt work, what is it and what do i do?
 
Physics news on Phys.org
0.15 is the coefficient of friction. So in this case the frictional force will be,

F(friction) = F(gravity)(.15)

Try drawing a free body diagram with the applied force (that's the 150N it's talking about) and the force of friction and try to figure it out. Remember F=ma
 
Thread 'Struggling to make relation between elastic force and height'

Thread 'Struggling to make relation between elastic force and height'

Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
View full post »
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »

Similar threads

Newton's law problem: Pushing 2 stacked blocks on a horizontal table
Replies
13
Views
3K
How much force does the 20 kg block exert on the 10 kg block?
Replies
17
Views
2K
Calculating Force and Acceleration in a Two Block System with Varying Friction
Replies
6
Views
1K
Coefficient of Friction when Normal Force is Reduced [HS]
Replies
5
Views
2K
Mechanical Physics: Coefficient of Friction
Replies
20
Views
3K
Finding the work done by a block
Replies
4
Views
3K
Friction, Mass and Acceleration: Analyzing Block Motion
Replies
6
Views
2K
Acceleration of a box across a rough horizontal plane
Replies
1
Views
2K
Frictional Forces on a Wooden Crate with External Forces
Replies
1
Views
2K
Find the frictional force on the block
Replies
10
Views
2K

Hot Threads

Recent Insights

Back
Top