Select Page

# 1.4 Practice Problem Transcribed Image Text: Problems 27 1.2. Calculate the altitude at which an artificial satellite orbiting in the equa- torial plane can be

1.4 Practice Problem Transcribed Image Text: Problems
27
1.2. Calculate the altitude at which an artificial satellite orbiting in the equa-
torial plane can be a synchronous satellite (i.e., can remain above the same
spot on the surface of Earth).
1.3. An artificial satellite is placed in a natural synchronous orbit above the
equator and is attached to Earth below by a wire. A second satellite is
attached to the first by a wire of the same length and is placed in orbit
directly above the first at the same angular velocity. Assuming that the wires
have zero mass, calculate the tension in the wires per unit mass of satel-
lite. Could this tension be used to lift objects into orbit with no additional
expenditure of energy?
1.4. A train is running smoothly along a curved track at the rate of 50 ms-1.
A passenger standing on a set of scales observes that his weight is 10%
greater than when the train is at rest. The track is banked so that the force
acting on the passenger is normal to the floor of the train. What is the radius
of curvature of the track?
1.5. If a baseball player throws a ball a horizontal distance of 100 m at 30°
latitude in 4 s, by how much is the ball deflected laterally as a result of the
rotation of Earth?
1.6. Two balls 4 cm in diameter are placed 100 m apart on a frictionless hori-
zontal plane at 43°N. If the balls are impulsively propelled directly at each
other with equal speeds, at what speed must they travel so that they just
miss each other?
1.7. A locomotive of mass 2 × 105 kg travels 50 ms-l along a straight horizontal
track at 43°N. What lateral force
exerted on the rails? Compare the mag-
nitudes of the upward reaction force exerted by the rails for cases where
the locomotive is traveling eastward and westward, respectively.
1.8. Find the horizontal displacement of a body dropped from a fixed platform
at a height h at the equator, neglecting the effects of air resistance. What is
the numerical value of the displacement for h = 5 km?
1.9. A bullet is fired directly upward with initial speed wo at latitude o. Neglect-
ing air resistance, by what distance will it be displaced horizontally when
it returns to the ground? (Neglect 22u cos o compared to g in the vertical
momentum equation.)
1.10. A block of mass M = 1 kg is suspended from the end of a weightless string-
The other end of the string is passed through a small hole in a horizontal
platform and a ball of mass m = 10 kg is attached. At what angular veloc-

Select the type of service you need: writing, calculations, or programming. We’ve created an intuitive order form that tells you what information to enter and where, so make sure to fill out each required field. Also, make your requirements as specific as possible. Don’t rush! Take your time and explain everything in detail how it works.

Proceed to checkout and enter your credit card details or PayPal login, how to pay. Follow the payment provider’s instructions to confirm the transaction.
Now your order is in our system! We’ll start processing it right away.

When you place an order with our company, we ask you to provide us with such personal information as your name, phone number, and email address. We need this data to keep you updated on the important things related to your order or account.

##### Is there a possibility of plagiarism in my completed order?

We complete each paper from scratch and in order to make you feel safe regarding its authenticity, we check it for plagiarism before its delivery. To do that, we use our in-house software, which can find not only copy-pasted fragments but even paraphrased pieces of text. Unlike popular plagiarism detection systems that are used by most universities (e.g. Turnitin.com), we do not report to any public databases—therefore, such checking is safe.

We provide a plagiarism-free guarantee that ensures your paper is always checked for its uniqueness.

##### Is there a money-back guarantee? If yes, how can I receive a refund?

You can certainly get your money back in several cases. You can receive a full refund if you have paid for your order twice or if you have placed two identical orders. In case your paper was late or the quality of the paper does not correspond to your expectations, you will get compensation for these issues.

##### Do you keep a database of pre-written essays?

No, we do not have such a database. All papers you order from us are written from scratch. This means your paper is unique and has never been published before—neither will it be published after we deliver it to you.

##### When will my custom paper be done?

While placing an order with WritersHub, you can choose a period of time within which a paper should be delivered to you. The countdown until the specified deadline starts automatically from the moment we receive your payment in our system. For example, if you pay for your order at 6pm on Monday and choose a 3-day delivery option, you will receive your custom paper by 6pm on Thursday.

Remember that a writer needs a sufficient amount of time in order to conduct thorough research. Therefore, please choose the most suitable deadline when you place an order. Moreover, the later you need your paper to be delivered to you, the cheaper it will be. Thus, you will be able to save your money while your writer will have enough time to work on your order and ensure its quality.

Make sure you upload all the additional materials at the very beginning. If you fail to do that, the deadline for your order will be postponed as well.