Finding combined kinetic energy

PAstudent
Messages
47
Reaction score
0
image.jpg
1. Homework Statement

Homework Equations


In picture

The Attempt at a Solution


Is my setup correct for finding the combined kinetic energy in part a)
 
Physics news on Phys.org
Check your signs. Better still, think about the meanings of the terms. Does the gained spring energy increase or reduce the kinetic energy?
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Kinetic Energy of a Cylinder Rolling Without Slipping
Replies
21
Views
4K
Net work and kinetic energy (pushing a wagon to accelerate it)
Replies
1
Views
1K
Confused about a conservation of energy problem
Replies
4
Views
2K
Combined Rotation and Translation of a Rectangular Plate
Replies
9
Views
2K
Resistance force changing the velocity of an object
Replies
8
Views
1K
Conservation of Momentum Problem - Mechanical and Kinetic Energies
Replies
2
Views
907
Determine energy required to stop rolling mass
Replies
10
Views
655
Kinetic energy of the Monster Hunter cannon
Replies
3
Views
1K
Work done during a collision -- Change in Kinetic Energy & change in Momentum
Replies
1
Views
2K
Falling stick problem (no friction): What is the kinetic energy?
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top