On A Smooth Horizontal Floor

I tried finding acceleration by doing a dv dt and divided 80n by the product 163m s2 but the answer 490kg is not correct according to my.

On a smooth horizontal floor.

On a smooth horizontal floor an object slides into a spring which is attached to another mass that is initially stationary. What is the mass of the block of ice. A child sits stationary at one end of a long trolley moving uniformly with a speed v on a smooth horizontal floor. A dockworker applies a constant horizontal force of 76 0 to a block of ice on a smooth horizontal floor.

If the worker stops pushing at the end of 5 50 how far does the block move in the next 5 60. The frictional force is negligible. The block starts from rest and moves a distance 10 0 in a time 5 50 what is the mass of the block of ice. A long thin inextensible and very flexible uniform wire is lying on the smooth horizontal floor.

A horizontal force of 32 n is applied to the 3 0 kg box pushing it against the 5 0 kg box and as a result both boxes slide along the floor. When a horizontal 15 0 n pull to the right is exerted on the lower box see in the figure both boxes move together. One end of the wire is bent back and then pulled with constant velocity v and the bottom end is pulled along the wire at a velocity v 2 such that at any instant of time both the parts of the wire are parallel to each other and almost touch each other. The man starts walking on the plank towards north and stops after moving a distance of 6 m on the plank.

A 12 n b 20 n c 24 n d 32 n e 0 n. A 20 0 n box rests on a 50 0 n box on a perfectly smooth horizontal floor. A man of mass 80 kg stands on a plank of mass 40 kg. When the spring is most compressed both objects are moving at the same speed.

If the child gets up and runs about on the trolley in any manner what is the speed of the cm of the trolley child system. A dock worker applies a constant horizontal force of 80 0 n to a block of ice on a smooth horizontal floor. A 3 0 kg and a 5 0 kg box rest side by side on a perfectly smooth level floor. The plank is lying on a smooth horizontal floor.

Find the magnitude and direction of the net external force on the upper box. The frictional force is negligible. How hard do the two boxes push against each other. If young s modulus of elasticity of the metal is e and the mean coefficient of linear expansion is α per degree celsius then the compressional force required to prevent the rod from expanding along its length is.