Mechanics | Relativity Answers

A block of mass m starts at rest and slides down a frictionless circular ramp from a height h. At the bottom, it hits a massless spring with spring constant k and in addition begins to experience a frictional fore. The coefficient of kinetic friction is given by mu. (a) What is the speed of the block at the bottom of the ramp just before it hits the spring? (b) Find the total horizontal force on the mass after it hits the spring as a function of the coordinate x given in the diagram.

Either read a biography or visit at least four Web sites for source material. In a 150-300 word discussion post, describe why Isaac Newton was important. Present the world view before and after this individual's contributions. Include a description of the laws of physics that were affected. Present the relevant equations. Present the impact of this individual's work on contemporary life – what has changed because of his work?
Include your sources.

A. A composite member ABCD consists of a brass rod BC, 50mm in diameter and 200mm long, to the ends of which are concentrically welded steel rods of 20mm diameter and 100mm in length. The member is supported at A and D as shown in figure 4. When an axially aligned force is applied at D in the positive x direction, point D moves 0.15mm.
(i) The axial movement of points B and C
(ii) The axial stress in each part of the composite member
Ignore self-weight and take Ebrass= 120 KN/mm2, Esteel= 200KN/mm2

two railway station A and B and 50 kilometre apart and a electric train which can be accelerated 5 kilometre per hour per second and accelerated 3 km per hour per second the maximum speed is 90 km per hour there are 12 station all are more than a kilometre apart Find the least time which can be take to make a journey a to b.

The position time graph of two cars A and B are straight lines making angles 30 degree and 60 degree with the timeaxis respectivily.The ratio of velocities of A and B is

A car diriving on a straight level road at constant speed. Draw a free body diagram for the car showing the significant force that act upon it

I'm curious to know whether or not we use momentum while hitting the ball on wall in Squash for a powerful shot

The wavelength of light in vacuum is 5000 A. When it travels normally through diamond the thickness of 1mm, what is the number of waves of lights in 1mm of diamond? Refractive index of diamond is 2.417
Ans )4834 waves

What minimum work is required to lift a 14 kg mass a distance of 7.0 m? begin mathsize 14px style open parentheses straight g equals 10 space bevelled straight m over straight s squared close parentheses end style

An airplane is taking off in a runway with an airspeed of 130km/hr. A car is driving 120km/hr in the runway and able to remain under the plane. At what angle does the plane climb?