An ideal massless spring with spring constant k is placed at the bottom of a frictionless inclined plane which makes an angle tita with the horizontal. A block of mass m is released from rest at the top of the incline.it moves a distance S along the incline before it touches the spring. Find the maximum speed of the block?

Two metallic spheres of mass M are suspended by two strings each of length L.The distance between the upper ends of the strings is L.The angle which the strings will make with the vertical due to mutual attraction of sphere is (if each mass horizontally moved by a distance of L/4 due to mutual attraction)If this answer exists then also explain it again

Two metallic spheres of mass M are suspended by two strings each of length L.The distance between the upper ends of the strings is L.The angle which the strings will make with the vertical due to mutual attraction of sphere is (if each mass horizontally moved by a distance of L/4 due to mutual attraction)If this answer exists then also explain it again and say it where it exists