Classical Mechanics Answers

What are poission bracket.

A small piston of a hydraulic press has an area of 20.0 cm2. If the applied force to the piston is

75.0 N, what must the area of the connected large piston be to exert a force of 6550 N?

A rocket has an initial mass of 2 x 104 kg, a mass ratio of 3, a burning rate of 100 kg/sec, and an exhaust velocity of 980 m/sec. The rocket is fired vertically from the surface of the earth. How long after ignition of the engines will the rocket leave the ground? (

A particle P moves on the plane. Position vector of P is "\\vec{r}". Angle "\\theta" measured from point O to OP. If "\\ddot{\\vec{r}}=(kr\\dot{\\theta}-\\mu r)\\hat{e}_r+k\\dot{r}\\hat{e}_\\theta" where "k" and "\\mu" are constant and "\\mu >\\frac{3}{4}k^2". Defining initial conditions at the time "t=0" ,"\\vec{r}=a\\hat{e}_r, \\dot{\\vec{r}}=\\frac{1}{2}ka\\hat{e}_\\theta" and "\\theta=0" find equation of motion of P"\\ddot{\\vec{r}}=(kr\\dot{\\theta}-\\mu r)\\hat{e}_r+k\\dot{r}\\hat{e}_\\theta)"

As shown in the figure below, two forces are applied horizontally to two blocks in contact. The horizontal surface on which the blocks slide frictionless. if F = 6.0N and M=1.0kg, what is the magnitude of the force exerted on the large block of mass 3M by the small block of mass 2M.

https://i.gyazo.com/25f5ef792c93e6b6a36a11cfb984d5a5.png

When a ball is released freely, it falls to the ground at 25 degrees. What is the horizontal scale and maximum height of the ball?

What are the constituents of cobalt of 60 nucleus?

1. A rocket has an initial mass of 2 x 104 kg, a mass ratio of 3, a burning rate of 100 kg/sec, and an exhaust velocity of 980 m/sec. The rocket is fired vertically from the surface of the earth. How long after ignition of the engines will the rocket leave the ground?  (R1P14-3, 493)

1. A particle of mass m is repelled from the origin by a force f= k/x3, where x is the distance from the origin. Solve the equation of motion, if the particle is initially at rest at a distance x0 from the origin. 

Two bodies are colliding with each other. Assuming that the bodies have initial velocities on the same axis, what are the final velocities of the bodies if the collision is totally inelastic? What are the velocities if the collision is totally elastic?

There are multiple cases but i dont know them depenind on the sense or mass