Purchase Solution

Angular Motion and Newton's Second Law

Not what you're looking for?

Ask Custom Question

At t=0, a wheel rotating about a fixed axis at a constant angular acceleration has an angular velocity of 2 rad/s. Two seconds later it has turned 5 complete revolutions. What is the angular acceleration of this wheel?
==============================================
Answer:
a) 17 rad/s^2
b) 14 rad/s^2
c) 20 rad/s^2
d) 23 rad/s^2
#################################################
A 9.00 kg hanging weight is connected to a string over a pulley to a 5.00 kg block that is sliding on a flat table. If the coefficient of kinetic friction is 0.15, find the tension in the string.
=============================================
Answer:
a) 28.3 N
b) 36.2 N
c) 40.4 N
d) 53.4 N
================================================
OTA: Please take this problem only if you can show step by step problem solving and equations used. Thank you.

Purchase this Solution
Solution Summary

The 3-pages solution provides a step-by-step explanations and full derivations how to solve these two problems

Solution Preview

Hello and thank you for posting your question to Brainmass!
The solution is ...

Purchase this Solution
Free BrainMass Quizzes
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.

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

  • parameters of simple harmonic motion

    (e) According to Hook's law, F = kx then by Newton's second law, F = ma At t = 1.0 s, x = A = 0.080 m so the force F = k A = 1.234 * 0.080 = 0.099 N Therefore, the acceleration a = F/ m = 0.099 / 0.50 = 0.198 m/s^2.

  • What net torque is being applied to the blades?

    So, were Newton's law in linear motion was F = ma, we have T = IA in rotational motion, where I is the moment of inertia and A is now the angular acceleration.

  • Masses, cord and pulley

    second law of motion and the equation derived from the same viz. : Force F = Mass (m) x Acceleration (a) - for the linear motion ......(1) and Torque τ = Moment of inertia (I) x Angular acceleration (α) - for rotational motion ...(

  • Biomechanical Principles of Running

    optimal performance of movement patterns (Newton's second law) can be seen with the flexion and extension of the lower limbs, and how these work in concert with the rotation, abduction, adduction of the hips and torso.

  • Rotational motion


    The first method uses conservation of energy while the second method uses Newton's second law. Needless to say, the result is identical using both methods.

  • circuile motion and work-enegy theorem

    By Newton's Second Law: F = mv^2/r 3. when the friction is negligible, apply work-energy theorem, the work done by the force F is against the gravity, that is, the gain of the potential energy.

  • Rotational motion: Angular momentum and Torque

    From Newton's second law of motion, ma = Fsinθ.

  • Apollo 13 and Newton's Laws

    42048 Apollo 13 and Newton's Laws I am trying to write 5 paragraphs on Apollo 13: -first paragraph: introduction -second paragraph: Newton's first law, balance forces=no change in speed (with 2 examples) -third paragraph: Newton's second law

  • Lagrangian of a Rotating Mass, Spring and Hanging Weight

    The equation for l: (1.14) Again, we see here that this is Newton's second law for .

  • Rotational Dynamics

    ) As per Newton's second law of motion as applied to rotational motion: Torque (τ) = Moment of inertia (I) x Angular acceleration (α) Substituting values: - 0.3 = 0.027α α = - 0.3/0.027 = - 11.11 rad/s2 Initial frequency of rotation of

View More Related Solutions