Purchase Solution

A person and cage are suspended from pulley; Find force exerted on rope

Not what you're looking for?

Ask Custom Question

A man sitting in a cage is connected to a pulley system of three movable and one fixed pulley in the system shown in ATTACHMENT #1.

He pulls down on a rope as shown, to raise himself and the cage. The man and cage have a total weight of 639 nt. Ignore friction as negligible.

PART a. Find the force he exerts to move upward with constant velocity.

PART b. Find the force he exerts to move upward with acceleration of 1.8 m/sec^2.

Attachments
Purchase this Solution
Solution Summary

In six steps, the problems are explained and solved.

Solution Preview

PART a.
Step 1.
On ATTACHMENT #1, letting R = the force he exerts, show in terms of R, the force in each segment of each rope.

Step 2.
For the two ropes which actually are in contact with the man and the cage, express ...

Purchase this Solution
Free BrainMass Quizzes
Basic Physics

This quiz will test your knowledge about basic Physics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

The Moon

Test your knowledge of moon phases and movement.

View More Free Quizzes
Related BrainMass Solutions

  • Classical Mechanics and Kinematics

    A giant wheel, 40m in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at X (as shown) the force exerted by the man on the platform is equal to his weight.

  • Physics

    Find (a) the forces acting between adjacent links, (b) the force F exerted on the top link by the agent lifting the chain, and (c) the net force acting on each link. 3)Two blocks are connected over a massless pulley.

  • Moving Tension of load of bricks when rope is passing over a pulley

    343724 Moving Tension of load of bricks when rope is passing over a pulley See attached figure. A load of bricks with mass m1 = 14.2 kg hangs from one end of a rope that passes over a small, frictionless pulley.

  • Rotational Dynamics -Mass pulley system

    Noting that the tension in the rope is not the same on each side of the pulley, find the mass of the pulley. Problem: By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows.

  • Machines and mechanics

    The efficiency of a squeaky pulley system is 73 percent. The pulleys are used to raise a mass to a certain height. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? 3.

  • Laws of Motion : Connected motion

    189093 Laws of Motion : Connected motion (Please see the attached file for detailed problem and fig.) The two blocks, m1 = 3.0 kg and m2 = 4.9 kg, in the figure (see attachment) are connected by a massless rope that passes over a pulley.

  • Caculate Tension Problem / Incline Plane and Pulley Problem

    29675 Caculate Tension Problem / Incline Plane and Pulley Problem Please see attachment. 1. A 70 kg painter standing on a long 5.5 m board which suspended from 2 vertical ropes attaches to each end of the board. Board is 15 kg.

  • A Block of Mass Being Released From a Pulley

    250127 A Block of Mass Being Released From a Pulley A block of mass M2 = 4kg hangs from a rope that is wrapped around a frictionless pulley and connected to another mass M1 = 2kg that is at rest on a frictionless table.

  • rate of bucket rising

    121367 Related Rates 3.A pulley is suspended 13.5 m above a small bucket of cement on the ground. A rope is put over the pulley. One end of the rope is tied to the bucket and the other end dangles loosely to the ground.

View More Related Solutions