Purchase Solution

Coefficient of friction and tension: maximum value of M before block A starts to move

Not what you're looking for?

Ask Custom Question

See attached diagram.

Q. A 10 kg block on a table for which the coefficient of friction is 0.4 is connected to a knot K by a horizontal string. Another block of mass M hangs from point K and the string makes a 30 degree with the horizontal goes upward to a fixed wall.

a. What maximum value can M be before block A starts to move to the right?

b. What is the tension of the string attached to the wall as block A just starts to move?

(assume gravity =10m/sec^2)

Attachments
Purchase this Solution
Solution Summary

The coefficient of friction and tension is computed. The expert finds the maximum value of M before a block falls down. With good explanations, the problem is solved.

Solution Preview

See the attachment.

The key to this problem is force balance in the x and y components. So let's start out with the y component. We assume that the knot and block are in static equilibrium, sum ...

Purchase this Solution
Free BrainMass Quizzes
Basic Physics

This quiz will test your knowledge about basic Physics.

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.

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.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

The Moon

Test your knowledge of moon phases and movement.

View More Free Quizzes
Related BrainMass Solutions

  • Conservation of Energy in a Sliding Block

    As mentioned before, the spring pushes the block to the left and when the spring is back to its original length, it imparts a KE of (1/2)*m*V^2 with V = 0.73 m/s, and so the block detaches and starts moving to the left.

  • Inclined Planes and Motion

    54) A 31.9-kg block starts from rest on the top of a 33.6-degree incline and slides a distance of 2.0 meters in 4.0 seconds. Determine the coefficient of friction between the block and the incline.

  • Problem Set

    Figure P4.50 (a) the minimum value of N (b) the normal force exerted by the incline on the block N 7. A block of mass m = 2.00 kg rests on the left edge of a block of length L = 3.00 m and mass M = 8.00 kg.

  • Force and Motion Minimum Magnitudes

    What is the coefficient of kinetic friction between the sliding block and the table ?

  • Force and acceleration

    What is the tension in the right-hand cable? 21. What is the tension in the horizontal cable? 22. A rope connects boat A and boat B. Boat A starts from rest and accelerates to a speed of 9.5 m/s in a time t = 47 s. The mass of boat B is 540 kg.

  • Comparing Areas

    (c) What value of F is required to move the sled up the plane at constant velocity ? 3.

  • Calculating Angles to Solve Problems

    The elevator begins to move downward with an acceleration of 4 m/s/s before reaching a constant velocity. How much is the tension in the rope (to two decimal places) between the masses during the acceleration? 4a.

  • Applying Newton's second law

    Between the block and slab, the coefficient of static fraction is 0.60, and 0.40 is the coefficient of kinetic friction. A horizontal force of 100 N is applied to the block (on top of slab).

  • Friction: Basic questions

    Thus we can write F_max ∝N Or F_max=costant*N (the constant here is called coefficient of friction) 4 Represent and Reason Some students are trying to move a GIANT pumpkin across the room.

View More Related Solutions