A 740.0 kg boulder is raised from a quarry 115 m deep by a long chain having a mass of 555.0 kg. This chain is of uniform

Question

A 740.0 kg boulder is raised from a quarry 115 m
deep by a long chain having a mass of 555.0 kg.
This chain is of uniform strength, but at any point it
can support a maximum tension no greater than
2.60 times its weight without breaking.
For related problem-solving tips and strategies, you
may want to view a Video Tutor Solution of An air
track in a physics lab.

Set Up: The maximum tension in the chain is at the top of the chain. Apply F = ma to the composite object of
chain and boulder. Use the constant acceleration kinematic equations to relate the acceleration to time. Let +y be
upward. T = 2.60W chain mtot = mchain +mboulder = 1295 kg.
Solve: EF,
a =
Part B
= may gives T-mtotg = mtota.
t = 4.92
2.60(555.0kg)
1295 kg
T-mtot9
mtot
− 1) (9.80 m/s²) = 1.12 m/s².
μA
a =
2.60 mchaing-mtotg
mtot
How long does it take for the boulder to be lifted out at maximum acceleration if it started from rest?
Express your answer with the appropriate units.
S
Submit Previous Answers Request Answer
?
2.60 mchain
mtot
X Incorrect; Try Again; 8 attempts remaining
-1) g

Kunduz · Accepted Answer

Click to see the answer