Welcome to Kemandi Q&A, where you can post problems of Math, Physics, Chemistry and other subjects and receive answers from other members of the community. It is to help high school and college students study and share knowledge.

The use of the site is free.

Need a help on using this site? click here

Two charges, one of 2.50μC and the other of -3.50μC, are placed on the x-axis, one at the origin and the other at x = 0.600 m, as shown in the figure

A 50 kg crate is being pushed on a horizontal floor at constant velocity. Given that the coefficient of kinetic friction between crate and floor is _{k} = 0.1, what is the push force F?

A uniform ladder of length L is leaning against the side of a building, as shown. A person of mass m = 75 kg is standing on it. The mass of the ladder is M = 10 kg. The coefficient of static friction between the ground and ladder is _{s1} = 0.5, and the coefficient of static friction between the wall and ladder is _{s2} = 0.3. What is the minimum angle so that the ladder doesn't slip?

Two blocks of mass m and M are hanging off a single pulley. Determine the acceleration of the blocks. Ignore the mass of the pulley.

A block of mass M falls onto a spring. Before colliding with the spring the velocity of the block is V. The spring has a stiffness k. How much is the spring compressed?

A block of mass M is traveling on a surface inclined at angle . The coefficient of kinetic friction is between block and surface. The velocity of the block is V before colliding with a spring. The spring has a stiffness k. How much is the spring compressed?

Two long straight wires carrying the same current I and separated by a distance r exert a force F on each other. The current is increased to 4I and the separation is reduced to r/6 .