The figure below shows a sphere of mass 4 kg attached to a horizontal rod by two strings of equal length and negligible mass. The rod is rotating about its axis and causes the 4 – kg mass to rotate in a circle centred on the rod. If the sphere is rotating at a speed of 4 m/s when it is at the lowest point in the circle, the tension in each of the strings is 13 m+ 2 m 2 m 4 kg

The figure below shows a sphere of mass 4 kg attached to a horizontal rod by two strings of equal length and negligible mass. The rod is rotating about its axis and causes the 4 – kg mass to rotate in a circle centred on the rod. If the sphere is rotating at a speed of 4 m/s when it is at the lowest point in the circle, the tension in each of the strings is 13 m+ 2 m 2 m 4 kg

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 17P: A light string can support a stationary hanging load of 25.0 kg before breaking. An object of mass m...

See similar textbooks

Similar questions

A space station, in the form of a wheel 120 m in diameter, rotates to provide an artificial gravity of 3.00 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheels rotation in revolutions per minute that will produce this effect.
The gravitational force exerted on an astronaut on the Earths surface is 650 N directed downward. When she is in the space station in orbit around the Earth, is the gravitational force on her (a) larger, (b) exactly the same, (c) smaller, (d) nearly but not exactly zero, or (e) exactly zero?
An office door is given a sharp push and swings open against a pneumatic device that slows the door down and then reverses its motion. At the moment the door is open the widest, (a) does the doorknob have a centripetal acceleration? (b) Does it have a tangential acceleration?
The 5 kg mass shown is connected to the rigid bar. It is allowed to rotate in a vertical circle with a 2 meter radius. It is rotating at 20 rpm. Assume the speed of the object is constant Find the speed of the object in m/s Find the force applied to the object by the bar at the top of the circle (mag and direction) Find the force applied to the object by the bar at the bottom of the circle. ( mag and direction)
A mass of 5 kg is tied at the end of the string 1.2 m long rotates in a horizontal circle. If the breaking tension in the string is 300 N, find the maximum number of rotations per minute the mass can make.
A mass m rotates at constant speed v at a radius of R from the orational axis. A force F provides the centripital force Fc. If you double the speed v of the mass, without changing m or R, the force needed to keep the mass in circular motion would: (a) Stay the same (b) double (c) halve (d)quadruple
A spacecraft on a future mars mission uses a rotating cylinder with an interior radius of 240 m to create artificial gravity. A 89 kg astronaut inside the cylinder feels 49% of the weight they would feel on Earth's surface. - How many rotations does this cylinder complete in one minute? - How many rotations does this cylinder complete in two minutes?
How long would a day be if the Earth were rotating so fastthat objects at the equator were apparently weightless?
A 180-kg ball on the end of a string is revolving uniformly in a horizontal circle of radius 0.500 m. The ball makes 4.00 revolutions in a second. (a) Determine the speed of the ball. (b) Determine the ball's centripetal acceleration. (c) Determine the force that a person must exert on opposite end of the string.
The radius Rhand mass Mh of a black hole are related by Rh = 2GMh/c2, where c is the speed of light. Assume that the gravitational acceleration agof an object at a distance ro= 1.001Rh from the center of a black hole is given by ag = G M / r2 (it is, for large black holes). (a) What is ag at rofor a very large black hole whose mass is 1.69 × 1015 times the solar mass of 1.99 × 1030 kg?(b) If an astronaut with a height of 1.73 m is at rowith her feet toward this black hole, what is the difference in gravitational acceleration between her head and her feet ahead-afeet?
A ball on a string is spun in a circle over someone's head. If the ball has a mass of 0.75 kg, spins at a steady speed of 3.0 m/s, and sweeps out a circle with a radius of 0.50 m, what will be the force the person's hand must exert on the string to bend the ball's path into a circle?
A 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 10 m/s. Find the tension in the string at the top of the circle and at the bottom of the circle.