Mechanics | Relativity Answers

a worker pushing a wheelbarrow of mass 50kg with a constant velocity along a horizontal surface whose coefficient of friction is 0.5..what is the force P exerted by the worker if angle is 30 degrees?

find the volume of a tractor engine cylinder where radius is 3.90 cm and whose length is 8.00cm

"A motorship travelling upstreams meets a raft flowing down stream. 45 mins. later the ships stop at a landing stage for 1hr. The ship travels downstreams and overtakes the raft in 1hr. The speed of the water is eqaul to 10km/h. Find the velocity of the current.

find the volume of a spherical water tank with radius 8.00m

Consider a system of three equal mass particles moving in aplane;their positions are given by aiiunit vector+bij unit vector
For particle 1,a1=3t^2+4 b1=0
For particle 2,a2=7t+5 b2=2
For particle 3,a3=2t b3=3t+4
Determine the position and velocity of the centre of mass as functions of time

Suppose you are designing a cart for carrying goods downhill.To maximize the cart speed,should you design the wheels so that their moments of inertia about their rotation axes are large or small,or it does not matter?Explain assuming that the mechanical energy is conserved?

Explain how the alpha particle scattering experiment provides an estimate of the dimensions of an atomic nucleus

A bird of mass 1kg is flying due south at the latitude of 30degree N in the northern hemisphere at a speed of 1m/s.Determine the coriolis force acting on it

The direction of motion of a projectile at a certain instant is inclined at a angle 60 to the horizontal. After root 3 second it is inclined an angle 30. The horizontal component of velocity of projectile is?

explain moment of interia of a solid sphere and solid cylinder?