non calc physics

Anonymous
timer Asked: Jun 19th, 2018
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Question description

I have Basic straight forward non-calculus physics. it is easy it won't take time. I need the answers with the steps that u do to get those answers.

Tutor Answer

wolfram777
School: Rice University

Hello,Here's the solution.

Chapter 5 Homework
1. The three ropes in the figure below are tied to a very small, very light ring (i.e. the mass of the
ring can be ignored). Two of the ropes are anchored to walls at right angles and the third rope
pulls as shown. What are T1 and T2, the magnitudes of the tension forces of the horizontal and
vertical ropes?

Answer:

2. Bethany, who weighs 560 N, lies in a hammock suspended by ropes tied to two trees. One rope
makes an angle of 45° with the ground; the other makes an angle of 30°. Find the tension in
each of the ropes.
Answer:

From the figure we can see that:

T1 cos(450 )= T 2 cos(300)
Putting respective values,

T1
3
= T2 √
2
2

Cross multiplying terms, we get,
3
T1 = T2
2 [eq. A]



Also,

T1 sin(450 )+T2 sin(300 )= 560
Putting respective values,

T1 T 2
+ = 560
2 2

Substituting T1 from eq. A,



3 1 T2

+ = 560
2 √
2 2
3T 2+T 2

= 560
2
T 2∗ ( √
3+1)
= 560
2
560∗ 2
T2 =
3+1

T2 = 409.95 N
T2

Putting value of T2 in eq. A,
3
T1 = 409.95∗
2



T1 = 502.08N

3. A horizonal rope is tied to a 50 kg box on frictionless ice. What is the tension in the rope if
a) The box is at rest?
b) The box moves at a constant 5.0 m/s?
c) The box as a horizontal velocity of 5.0 m/s and a horizontal acceleration of 5.0 m/s2?
Answer:
a) If the box is at rest, it means that there is no force acting on the box. Hence the tension in the rope
will be 0 N.
b) If the box moves at a constant speed, it means that the box i...

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Review

Anonymous
Outstanding Job!!!!

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