Classical Mechanics Answers

A student slides a 0.75 kg textbook across a table, and it comes to rest

after traveling 1.2 m. Given that the coefficient of kinetic friction

between the book and the table is 0.34, use the work–kinetic energy

theorem to find the book’s initial speed.

Briefly discuss on the directions of the magnetic dipoles and the signs of the magnetization 𝑀of following materials in an external magnetic field: i. Paramagnetic material ii. Diamagnetic material

Particle A with charge q and mass mA and particle B with charge 2q and mass mB, are accelerated from rest by a potential difference ΔV. After that, the particles are deflected by a uniform magnetic field into semi-circular paths. The direction of the magnetic field is perpendicular to the velocity of the particles. The radii of the trajectories by the particle A and particle B are R and 2R, respectively. i. Sketch a diagram to show the situation described above. ii. What is ratio of mA to mB?

particle of mass M1 moving with initial velocity Vo is incident on a stationary particle of mass M2. After collision , M1 was deflected through an angle ∅ and M2 an angle ∅. If the velocities of the particles after collision were V1 and V2 respectively. Show that for an elastic collission; V2=2Vo*M1/M1+M2*cos∅

A force-time graph shows a constant force of 115 N acting on an object over a period of 1.40 s. Using the concept of impulse being equal to the area under the curve of a force-time graph, what is the impulse?

. Single choice.

Two forces, F₁ = 8.0 N, 60^o Northwest and F₂ = 12.0 N, Southwest, are applied to a particle at the origin. What third force is needed so that the particle will not be displaced from the origin?

What is poission bracket

A calorie is a unit of heat or energy and it equals about 4.2 J where 1 J = 1 kgm² s^-2. Suppose we employ a system of units in which the unit of mass equals a kg, the unit of length equals j8 m, the. unit of time is ys. Show that a calorie has a magnitude 4.2  ^{α-1 β-2 γ2} in terms of the new units.

 a) Explain the equation 𝑭 = −𝜵𝑈