How High Can Tarzan Swing After Jane Lets Go?

AI Thread Summary
The discussion revolves around calculating the maximum height Tarzan can reach after Jane releases the vine during their swing. The total mass of Tarzan and Jane is 140.0 kg, and they start swinging from a 6.0 m long vine at a 30.0° angle. Energy conservation principles are emphasized, stating that the initial potential energy equals the kinetic energy at the bottom of the swing. After Jane releases, only Tarzan's mass (90.0 kg) is considered for the subsequent swing. The problem encourages using symbols for calculations before substituting numerical values for clarity.
Pires
Messages
2
Reaction score
0
Tarzan and Jane, whose total mass is 140.0 kg, start their swing on a 6.0 m long vine when the vine is at an angle of 30.0° with the horizontal. At the bottom of the arc, Jane, whose mass is 50.0 kg, releases the vine. What is the maximum height at which Tarzan can land on a branch after his swing continues?

I have tried to get this problem but i just seem to be pausing because i can't find the right information/formula to proceed.
All help appreciated :smile:
 
Physics news on Phys.org
Energy is conserved. The energy of "Tarzan + Jane" at the starting point equals the energy they have at the bottom of the arc. When Jane let's go, Tarzan is left alone. But energy is still conserved. (You may find the problem easier than it looks. Try to do things with symbols; don't rush to plug in numbers.)
 
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...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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...
Back
Top