Saturday

December 20, 2014

December 20, 2014

Number of results: 51,759

**Physics**

A bucket of mass 1.70 kg is whirled in a vertical circle of radius 1.50 m. At the lowest point of its motion the tension in the rope supporting the bucket is 20.0 N. 1) Find the speed of the bucket. 2) How fast must the bucket move at the top of the circle so that the rope ...
*December 5, 2009 by Anonymous*

**physics**

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.15 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N. a) Find the speed of the bucket. b)How fast must the bucket move at the top of the circle so that the rope does...
*November 4, 2010 by jess*

**Physics**

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.40 m. At the lowest point of its motion the tension in the rope supporting the bucket is 30.0 N. Find the speed of the bucket. How fast must the bucket move at the top of the circle so that the rope does not ...
*October 23, 2011 by Lilly*

**physics!!!!!**

A bucket of mass 1.80kg is whirled in a vertical circle of radius 1.55m . At the lowest point of its motion the tension in the rope supporting the bucket is 28.0N. A-find the speed of the bucket. B-How fast must the bucket move at the top of the circle so that the rope does ...
*March 25, 2014 by Eayvom*

**physics**

please help i have to turn this in by 10PM a bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.55 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N.
*October 9, 2011 by joey*

**physics**

A bucket of mass 1.60 kg is whirled in a vertical circle of radius 1.30 m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N. (a) Find the speed of the bucket. Enter a number.1 m/s (b) How fast must the bucket move at the top of the ...
*December 18, 2009 by asia*

**Physics Angular Motion**

a 5.0 kg mass attached to the end of a string swings in a vertical circle (radius 2m) when the mass is at its lowest point on the circle the speed of the mass is 12 m/s. What is the tension of the string at this point?
*August 4, 2013 by Xian*

**Physics**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is
*February 12, 2013 by Eve*

**Physics**

You swing a 5.9 kg bucket of water in a vertical circle of radius 0.3 m. (a) What speed must the bucket have if it is to complete the circle without spilling any water? (b) How does your answer depend on the mass of the bucket? a) I don't understand how the velocity can be ...
*February 14, 2010 by Bob C*

**Physics**

A stunt pilot of mass 55.0 kg who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. A)If the plane's speed at the lowest point of the circle is 95.6 m/s , what is the minimum radius of the circle for the ...
*November 14, 2006 by Kuwaiti*

**Physics**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!
*February 13, 2013 by Eve*

**Physics**

The hammer throw is a track-and-field event, popular in Scotland, in which a ball on a rope (the "hammer") is whirled around the thrower in a circle before being released. The goal is the send the ball as a projectile as far down the field as possible. At a track meet, the ...
*June 24, 2012 by Jamie*

**PHYSICS**

A bucket is swung on a rope in a vertical circle as shown in the diagram below. The bucket has a mass of 1.5 kg, the radius of circular motion is 1.2 m, and it is being spun at a rate of 45 revolutions per min (RPM) what is the tension of the rope at position A (bottom) and ...
*January 20, 2011 by Anonymous*

**physics**

You have tied a short length of rope to the handle of a bucket full of water, and are swinging the bucket in a vertical circle with radius 60 cm. What is the minimum speed that the bucket must be moving in order for no water to spill out at the top of the circle? Vbucket=?
*February 26, 2014 by Anonymous*

**Physics (Formula)**

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!
*February 13, 2013 by Eve*

**physics**

A child spins a bucket in a vertical circle with a radius of 65 cm. The weight of the contents seems to change as bucket rises and falls along the circular path. How fast must the bucket travel at the top of the circle so the contents seem to wight 2 times their weight?
*November 20, 2011 by Jason*

**physics**

you swing a 4.7 kg bucket of water in a vertical circle of radius 0.3 m. What speed must the bucket have if it is to complete the circle without spilling any water?
*January 23, 2011 by Anonymous*

**physics**

A 15 kg mass, tied to the end of a 0.5 m long steel wire, is whirled in a vertical circle. The cross- section of the wire is 0.02 cm2. When the mass is at the bottom of the circle, its angular velocity is 2 rev s i. Find the elongation of the wire at this point.
*January 2, 2014 by badar*

**physics**

You hold a bucket attached to a rope, and in the bucket is a 500.0 g rock. You swing the bucket so the rock moves in a vertical circle 1.6 m in diameter. What is the minimum speed the rock must have at the top of the circle if it is to always stay in contact with the bottom of...
*November 11, 2013 by jim*

**physics**

You hold a bucket attached to a rope, and in the bucket is a 500.0 g rock. You swing the bucket so the rock moves in a vertical circle 1.6 m in diameter. What is the minimum speed the rock must have at the top of the circle if it is to always stay in contact with the bottom of...
*November 11, 2013 by jim*

**physics**

You hold a bucket attached to a rope, and in the bucket is a 500.0 g rock. You swing the bucket so the rock moves in a vertical circle 1.6 m in diameter. What is the minimum speed the rock must have at the top of the circle if it is to always stay in contact with the bottom of...
*November 11, 2013 by jim*

**physics**

You hold a bucket attached to a rope, and in the bucket is a 500.0 g rock. You swing the bucket so the rock moves in a vertical circle 1.6 m in diameter. What is the minimum speed the rock must have at the top of the circle if it is to always stay in contact with the bottom of...
*November 11, 2013 by jim*

**physics**

A brick of mass 1.19 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.16 meters. The cable will break if the tension exceeds 45.0 Newtons. What is the maximum speed the brick can have at the bottom of ...
*November 30, 2013 by Netta*

**physics**

A jet pilot takes his aircraft in a vertical loop.f the jet is moving at a speed of 1500 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.
*October 18, 2010 by Anonymous*

**Physics**

object of mass 2 kg is attached to string and rotate in vertical circle of radius 1 m. at highest point it has velocity of 4 m/s. what is tension in string at that point. at lowest point it is .5 m above ground. if string breaks at highest point how far does it travel ...
*November 20, 2014 by Anonymous*

**physics**

A 0.21 kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the tension is 18 N. -------------------------------------------------------------------------------- (a) How does the magnitude of the centripetal ...
*April 4, 2008 by Johnathan*

**physics**

a jet pilot takes his aircraft in a vertical loop. a) if the jet is moving at a speed of 2000 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's b) calculate also the ...
*October 4, 2009 by jeffery*

**Physics**

A 500 g metal ball is whirled in a vertical circle. What is the centripetal force which draws it toward the center of the circle as it passes through the highest point?
*December 30, 2012 by Jem*

**physics**

A mass M of 2.95 kg is attached to the end of a string whose length is 0.420 m. The mass slides without friction on a horizontal surface as indicated in the diagram. If the string can withstand a maximum tension of 127.5 N, what is the maximum tangential speed the ball can ...
*October 16, 2013 by Anonymous*

**AP Physics**

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*October 26, 2010 by PLEASE HELP *

**AP PHYSICS**

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*October 27, 2010 by PLEASE HELP NEED IT PLEASE*

**Math**

Circle C has radius 4 inches. Circle D had radius 9 inches. These two circles are connected. Point A,B,and E are points of tangency. Find AB. From point C to point D(which is the radius of circle C plus the raduis of circle D) it is 13 inches. From point C to point A (radius ...
*April 29, 2011 by Greg*

**Physics 6A**

A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100 at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5 's B)Calculate the 68 pilot's ...
*May 9, 2012 by Daisy*

**physics**

If the jet is moving at a speed of 1500 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.
*October 18, 2010 by Anonymous*

**Physics**

If the jet is moving at a speed of 1800 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.
*December 22, 2010 by Anonymous*

**Physics**

A small sphere of mass 2 kg is attached to the end of a cord of length 2m and rotated in a vertical circle about a fixed point O. Determine the tension in the cord at the lowest point of the trajectory if the speed at this point is 7m/s. Use g=9.8 m/s2.
*November 8, 2014 by Anonymous*

**physics**

If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and directly straight out...
*November 22, 2009 by Maggie*

**physics**

A pendulum of length L = 20.8cm and mass m = 168 g is released from rest when the cord makes an angle of 65.2 with the vertical. (a) How far (m) does the mass fall before reaching its lowest point? (b) How much work (J) is done by gravity as it falls to its lowest point? (c) ...
*August 9, 2011 by waqas*

**physics**

A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical. (a) How far (m) does the mass fall before reaching its lowest point. (b) How much work (J) is done by gravity as it falls to its lowest point...
*December 11, 2011 by Sarah*

**physics help**

A circular-motion addict of mass 70 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 6.5 m/s. (a) What is the period of the motion? s (b) What is the magnitude of the normal force on the addict from the seat when both go through the ...
*December 14, 2008 by john*

**physics**

A circular-motion addict of mass 70 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 6.5 m/s. (a) What is the period of the motion? s (b) What is the magnitude of the normal force on the addict from the seat when both go through the ...
*December 14, 2008 by help*

**physics**

a stone tied at one end of a string of length,l is whirled in a horizontal circle with constant linear speed,v.which of the following expressions describe the relation between the radius of the circle,r and the angle between the string and the vertical axis?
*September 11, 2011 by tim*

**Physics**

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is
*February 12, 2013 by Eve*

**physics**

A 9.5-kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 70 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*July 19, 2010 by Anonymous*

**PHYSICS**

A 9.5-kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 80 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 5, 2010 by JULIA*

**Physics**

A circular-motion addict of mass 85 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 6.1 m/s. (a) What is the period of the motion? __________s (b) What is the magnitude of the normal force on the addict from the seat when both go ...
*October 28, 2009 by Kajal*

**phy111**

A ball of mass 50 g tied to the end of a 50 cm inextensible string is whirled around in a vertical circle. Find the tension in the string when the ball is at the top of the circle. Take g=10m s2
*October 25, 2014 by hart*

**PHYSICS 6A centripetal acceleration **

A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100km/h at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5g's B)Calculate the 68kg ...
*May 9, 2012 by Daisy*

**physics**

A 25.0-g mass is tied at the end of a 1.50-m long string and is whirled in a horizontal circle. If the string makes an angle of 30.0o with the vertical, what is the frequency of revolution of the mass?
*September 20, 2014 by momo*

**Physics**

A fire helicopter carries a 555 kg empty water bucket at the end of a cable 20.9 m long. As the aircraft flies back from a fire at a constant speed of 38.4 m/s, the cable makes an angle of 38.3° with respect to the vertical. A) After filling the bucket with sea water, the ...
*September 27, 2011 by Bella*

**Physics**

A fire helicopter carries a 555 kg empty water bucket at the end of a cable 20.9 m long. As the aircraft flies back from a fire at a constant speed of 38.4 m/s, the cable makes an angle of 38.3° with respect to the vertical. A) After filling the bucket with sea water, the ...
*September 28, 2011 by Bella*

**Physics**

A fire helicopter carries a 555 kg empty water bucket at the end of a cable 20.9 m long. As the aircraft flies back from a fire at a constant speed of 38.4 m/s, the cable makes an angle of 38.3° with respect to the vertical. A) After filling the bucket with sea water, the ...
*September 28, 2011 by pete*

**physics**

A stone is tied to a string (length = 1.05 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*November 12, 2011 by nelson*

**physics**

A stone is tied to a string (length = 1.25 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*March 4, 2014 by Anonymous*

**Physics**

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is I just need the formula and it doesn't even have to be manipulated.
*February 13, 2013 by Eve*

**Physics**

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*October 24, 2010 by Jennifer*

**AP Physics**

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*October 24, 2010 by PLEASE HELP *

**AP Physics**

A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*October 26, 2010 by AP Physics*

**Physics**

A stone is tied to a string (length = 0.800 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*November 25, 2010 by Xavier*

**Physics**

A stone is tied to a string (length = 0.700 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
*September 25, 2014 by Anon*

**....anybody?**

A jet pilot takes his aircraft in a vertical loop (Fig. 5-43). (a) If the jet is moving at a speed of 1900 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's. _____m...
*October 9, 2006 by Skylar*

**Physics (Formula)**

I just need the formula. A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is
*February 13, 2013 by Eve*

**mechanics**

The figure below shows a ball with mass m = 0.299 kg attached to the end of a thin rod with length L = 0.388 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough ...
*November 2, 2012 by ruben*

**phy**

(Q1)What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G=0.0000000000667Nm2/kg2. Mass of the earth is 598000000kg (a)4200000m and 31000m/s (b)5600000m and 4300m/s (c)430000m and 5000m/s(d)3400000m and 6000m/s (Q2) A ball...
*July 5, 2013 by ikye*

**physics**

Drive an expression to calculate the tension and velocity in the motion of a vertical Circle at the 1: highest point and 2: lowest point?
*July 15, 2011 by Shrawan*

**Physics**

A jet pilot is in a vertical loop. If the jet is moving at a speed of 1300 km per hour at the lowest point of the loop determine the minimum radius of the cirlce so that the centripetal acceleration at the lowest point does not exceed 6.0g's.
*November 7, 2010 by Chris*

**college physics 1**

Reviewing Interactive Solution 5.46 will help in solving this problem. A stone is tied to a string (length = 1.29 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next...
*March 5, 2014 by anonymous*

**Physics**

A ball having a mass of 4 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 23 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when the ball is at the ...
*June 14, 2012 by James*

**Physics**

A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical. A) how far (m) does the mass fall before reaching its lowest point? My work: .26m - .109 = .151 m B) how much work (J) is done by gravity as ...
*May 26, 2011 by Casey*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Ingrid*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Adam*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, ...
*October 24, 2010 by Ashley*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Ashley*

**Physics **

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, ...
*October 24, 2010 by PLEASE HELP*

**physics**

Figure 8-31 shows a ball with mass m = 1.0 kg attached to the end of a thin rod with length L = 0.56 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. (a) What initial speed must be given the ball so that it reaches the ...
*February 18, 2008 by dawn*

**PHYSICS PLEASE HELP !!!!!**

A mass of 6 kg is tied to a 2 meter long rope and is swung in a vertical circle. At the bottom of the circle, the mass is moving at a speed of 16 m/s. What is the tension, in Newtons, in the rope after the mass has traveled to a point exactly halfway between the top and bottom...
*October 27, 2011 by Amanda *

**physics**

A mass of 0.04 kg is attached to a cord passing through a small hole in a frictionless, horizontal surface. The mass is initially orbiting with speed 4.9 m/s in a circle of radius 0.4 m. The cord is then slowly pulled from below, decreasing the radius of the circle to r2 = 0....
*October 19, 2011 by will*

**Physics**

A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when the ball is at the ...
*June 15, 2012 by Camilla*

**Physics**

A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when the ball is at the ...
*June 15, 2012 by Camilla*

**Physics**

If the jet is moving at a speed of 1800 at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.4 's The jet is moving in a verticle loop
*October 3, 2010 by Eden*

**Physics**

If the jet is moving at a speed of 1800 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.4 g's The jet is moving in a verticle loop
*October 3, 2010 by Eden*

**physics**

A 5.50 bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 77.0 . If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 14.0 without breaking the cord?
*February 1, 2012 by Emily*

**physics**

A 4.00 bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 78.0 . If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 10.0 without breaking the cord?
*October 4, 2013 by jasmine*

**physics**

A 5.30kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 76.0N .If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 14.0m without breaking the cord?
*September 14, 2013 by Anonymous*

**physics**

calculate the speed of the pendulum at its lowest point if its PE is 5J at its heighest point and has a total mass of 1kg. 5 Joules = (1/2) M V^2 at lowest point. Solve that equation for V at lowest point.
*June 16, 2007 by Sweety*

**physics**

A 3.28-kg bucket is attached to a disk-shaped pulley of radius 0.108 m and mass 0.727 kg. (a) If the bucket is allowed to fall, what is its linear acceleration? (b) What is the angular acceleration of the pulley? (c) How far does the bucket drop in 1.65 s?
*November 17, 2011 by tara*

**physics**

a stone of mass 1 kg is tied to the end of a string 1m long . it is whirled in a vertical circle . if the velocity of the stone at the top be 4m/s , what is the tension in the string ?
*April 13, 2013 by katie*

**physics**

A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.) B=3.20 c=2.00 (a) Determine the block's speed at points circle b and circle c. point circle b Y point circle c (b) ...
*February 23, 2012 by Darcie*

**Physics**

A uniform solid disk of radius 1.7 m and mass 81.3 kg is free to rotate on a frictionless pivot through a point on its rim. If the disk is released from rest in the position shown by the solid circle, what is the speed of its center of mass when the disk reaches the position ...
*March 19, 2011 by Jennifer*

**Physics**

Determine the tension in the string at the top and bottom of its path when a 0.3 kg yo-yo is whirled in a vertical circle of radius 0.5 m at 2.5 m/s. I'm sure I can solve this, I just can't find the equation for tension. The only equation I could find in my book is if ...
*December 13, 2009 by Rudy*

**Physics**

A thing rod of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass 5.00kg is attached to the other end. The rod is pulled aside through an angle 30.0 degrees and released. What is the speed of the ball at the lowest ...
*December 9, 2010 by Andrea*

**Mathematics**

An object of mass 250g attached to the end of string is whirled round in horizotal circle of radius 20cm with a constant speed of 12m/s caleculate centipetal accelaration centripetal force angular velocity
*November 10, 2011 by Eze*

**Mathematics**

An object of mass 250g attached to the end of string is whirled round in horizotal circle of radius 20cm with a constant speed of 12m/s caleculate centipetal accelaration centripetal force angular velocity
*November 10, 2011 by Eze*

**Physics **

Problem 3- A 40 kg child swings in a swing supported by two ropes, each 3 m long. (a) If the tension in each rope at the lowest point is 350 N, a. find the child's speed at the lowest point. b. the force exerted by the seat on the child at the lowest point. (Neglect the mass ...
*November 23, 2013 by Mariam*

**Physics**

A pendulum consist of a particle P of mass m, attached to one end of a model string of length l=2.85m. The other end of the string is attached to a fixed point O and the particle moves in a vertical circle about the fixed point. The angle made by the string with the vertical ...
*April 27, 2012 by Anonymous*

**Calculus**

A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6 , .8), the particle has horizontal velocity dx/dt=3. What is its vertical velocity dy/dt at that point? I don't know what equation to use or anything for this problem...
*December 7, 2010 by Anna*

**AP Calculus**

Hi, we just learned this new section today, and I am very confused.... A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6, .8) the particle has horizontal velocity dx/dt = 3. what is its vertical velocity dy /dt at ...
*December 14, 2010 by Sally*

**Math - Maxima and Minima**

The height, h, in metres, of a ski ramp over a horizonatal distance, x, in metres, is given by h(x)=0.01x^3-0.3x^2+60 for the interval 0 less than or equal to x less than or equal to 22. a) Find the vertical drop from the top of the ramp to the lowest point on the ramp. b) ...
*October 23, 2010 by Anonymous*

**Pre-Calc (Circles). Please help :(**

Five concentric circles with radii 1, 2, 3, 4, and 5 are drawn as shown dividing the circle of radius 5 into five regions: a circle of radius 1 and 4 annuuli (rings). What is the probability that a point chosen randomly from within the circle of radius 5 lies in the annulus ...
*September 28, 2014 by J*

**Physic**

A 2.28 kg bucket is attached to a disk-shaped pulley of radius 0.104 m and mass 0.712 kg. If the bucket is allowed to fall, calculate the tension in the rope.
*November 15, 2014 by Anonymous*

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