A small block of mass m slides along a smooth track, as shown in fig. (i) If it starts from rest at P, what is the resulting force acting on it at Q ? (ii) at what height above the bottom of the loop should the block be released so that the force it exerts against the track at the top of the loop equals its weight?

A small block of mass m slides along a smooth frictionless track as shown. (a) If it starts from rest at P , what is the resultant force acting on it at Q ? (b) At what height above the bottom should the block be released so that the force it exerts against the track at the top of the loop equals its weight?

A small block of mass m slides along a smooth frictional track as shown in the figure. If it starts from rest at P, what is the resultant force acting on it at Q?

A block of mass m slides along a frictionless surfce as shown in the figure. If it is releases from rest t A what is its speed at B?

A block of mass m is released along a smooth track shown in figure from its top point. Find the word done by gravity during its downward motion to the bottom of track.

A block of mass m is at rest on a rought wedge as shown in figure. What is the force exerted by the wedge on the block?

With what acceleratin a should the box of figure desecend so that the block of mass M exerts a force Mg/4 on the floor of the box?

A small toy car of mass m slides with negligible friction on a ''loop'' the loop track as shown in Fig.3E.32. The toy car starts from rest at a point H above the level of the lowest point of the track (a) If H = 2R , what normal force is exerted by the track on the toy car at point q?. What are the speed and normal force at point r ? (b) At what height will the ball leave the track and to what maxiumum height will it rise afterwards ? (c) If H = 4R , what is the speed and normal reaction reaction at point s ?

What should be the acceleration a of the box shown in figure so that the block of mass m exerts a force (mg)/(4) on the force of the box?