Wednesday
August 27, 2014

Homework Help: physics

Posted by Anonymous on Saturday, November 28, 2009 at 7:00pm.

A tennis ball on a string is being swung in a horizontal circle of radius r. The ball has mass m and the string length l. Which expression gives the magnitude of the tension T in the string in terms only of the speed v of the ball and of m, r, and l?

Answer choices
1. T=mgr/l
2. T=0, as is always the case for a conical pendulum.
3. T=mv^2/l
4. T=mv^2/r
5. T=m[g−(v^2/r)]
6. T=mv^2/2
7. T=mg
8. T=m[g+(v^2/r)]
9. T=mv^2l/r^2

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A ball of mass 3.0 kg is tied to the end of a 50-cm length of string. ...
Physics - A 3.1 kg ball is tied to a string and swung in a horizontal circle at ...
Physics - A conical pendulum is formed by attaching a ball of mass m to a string...
physics - a .2 kg ball is being swung around a verticle circle from a 1 m long ...
Physics - As shown in the picture to the right, a ball is suspended from the ...
Physics - A ball is tied to an elastic string of length 8.0 m and swung in a ...
PHYSICS!! - A ball on the end of a string is whirled around in a horizontal ...
Physics - Imagine that you swing about your head a ball attached to the end of a...
Physics Help - A ball of mass 1.76 kg is tied to a string of length 4.19 m as ...
physics - A ball of mass 1.04 kg at the end of a 0.52 m long string is swung in ...

Search
Members