Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 21P
To determine
To Calculate:The tension in the string.
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A small 0.250-kg object is attached to a string (see figure), where it swings in a section of a vertical circle of radius 2.50 m. Find the magnitude of the tension in the string when θ = 28.0°, the speed of the object is 4.50 m/s.
A 0.100 kg rock is attached to a 2.00 m long string and swung in a horizontal circle at a speed of 30.0 m/s. Find the tension in the string. Neglect the effect of gravity.
A 5 kg mass is attached to a massless string and is being rotated in a horizontal circle.
The length of the string is 0.5 m and the mass has a tangential velocity of 10 m/s. Find
the tension in the string.
Chapter 5 Solutions
Physics Fundamentals
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- A 1.5 kg mass is attached to a massless string and is being rotated in a vertical circle. The length of the string is 0.5 m and the mass has a tangential velocity of 7 m/s. Find the tension in the string at the top of the circle and at the bottom of the circle.arrow_forwardA bucket of mass 2.00 kg is whirled in a vertical circle of diameter 1.20m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N. Find the speed of the bucket.arrow_forwardA 0.250 kg ball on the end of a 1.50m string is whirled in a vertical circle at a uniform rate 60.0 revolutions per minute. What is the tension in the string when the ball is (a) at the top, (b) at the bottom, (c) at a position that makes 60° with the vertical?arrow_forward
- One end of a string of length 0.64 m is attached to a bucket containing water and the bucket is rotated about the other end in a vertical circle. Find the minimum speed with which it can be rotated without spilling the water at the highest point. How many revolutions per minute it is making?arrow_forwardA jet flying at 112 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.74 x 105 kg. Calculate the magnitude of the necessary lifting force.arrow_forwardAn aerobatic airplane flying at a constant 60.0 m/s makes a horizontal turn of radius 225 m. The pilot has mass 80.0 Kg. What is the pilot's apparent weight during the turn ?arrow_forward
- A rope of length 1m can withstand a maximum weight of 10 kg. Now a stone of mass 200 g is tied to it and is whirled round in a horizontal circle. Calculate the maximum permissible speed of the stone.arrow_forwardAn airplane flies in a horizontal circumference at a speed of 500 km / h. The wings form an angle of 35 ° to the horizontal. Suppose that, in addition to weight, other forces act on the plane, the sum of which is perpendicular to the wings. Determines the radius of the trajectory.arrow_forwardmaximum A weightless thread can bear a tension of 20 N. A stone of mass 1 kg is tied to it and revolved in a vertical circle of radius 1 m. find maximum angular velocity of the stone (g = 9.8 m/s²)arrow_forward
- A 1.20 kg model helicopter is tied to the ceiling with a string. When the helicopter's motor is started, it moves with a constant speed of 2.0 m/s in a horizontal circle of radius 0.80 m. Find the angle the string makes with the vertical and the tension in the string.arrow_forwardA small object of mass m = 0.200 kg moves with constant speed in a horizontal circle on the end of a light string that has length l = 0.600 m, as shown in the sketch. The string makes a constant angle of ? = 30.0° with the vertical. (a) What is the tension in the string? (b) What is the magnitude of the acceleration of the mass as it moves in its circular path? (c) What is the period of the motion, the time its takes the ball to complete one revolution?arrow_forwardA string under tension of 50.0 N is used to whirl a rock in a horizontal circle of radius 2.5 m at a speed of 20.4 m/s on a frictionless table. The string passes through a small hole in the table at the center of this circle. As the string is pulled in, the speed of the rock increases. When the string is 1.00 m long and the speed is 51.0 m/s, the string breaks. What is the breaking strength, in Newtons, of the string?arrow_forward
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