Physics Problem: Work Done by Friction w/ Bullet & Wood

  • Thread starter Thread starter rajkirann
  • Start date Start date
  • Tags Tags
    Physics
AI Thread Summary
To solve the physics problem, first calculate the normal force acting on the block with the bullet, which is equal to the combined weight of both objects. The work done by friction can be determined using the formula: work = frictional force × distance. The frictional force is calculated by multiplying the coefficient of friction (0.4) by the normal force. After determining the frictional force, multiply it by the distance (0.2m) to find the total work done by friction. This approach effectively applies the definition of work in the context of friction and motion.
rajkirann
Messages
1
Reaction score
0
Physics problem?
Suppose you shoot a bullet of mass 2g into a wooden block of mass 0.498 kg resting on the table. the bullet gets stuck in the wood, and the block slides a distance of 0.2m before it comes to rest again. how much work is done by the friction if the block with the bullet slides a distance of 0.2m on te table with a frictional coefficient of 0.4?
 
Physics news on Phys.org
Hint: What's the definition of work?
 
Check the definition of work. The relationship between the coefficient of friction and the normal is basically all you need to know because they gave you the distance.
 
Last edited:

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Similar threads

Finding the work done by a block
Replies
4
Views
3K
Newton's law problem: Pushing 2 stacked blocks on a horizontal table
Replies
13
Views
3K
Is My Physics Calculation on Bullet and Block Interaction Correct?
Replies
14
Views
4K
Coefficient of Friction question for a cart going down a wooden ramp
Replies
18
Views
3K
Inelastic collision problem: Bullet striking a wood block
Replies
2
Views
3K
Momentum problem -- Two bullets fired into a block
Replies
7
Views
2K
Variable friction on an inclined plane and maximum velocity
Replies
33
Views
3K
Calculating the velocity of of block that was crossed by a bullet
Replies
3
Views
2K
Motion, Energy balance, momentum question
Replies
3
Views
1K
Applications of Newton's laws (friction related)
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top