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Problem 4: A block of mass m slides down a frictionless incline as: The block is released from height h above the bottom of the circular loop. (a) Find the force exerted on the block by the inclined track at point A. (Hint: Consider the Newton's 2nd law in the radial direction and you may use polar coordinates for this circular part of the path to relate the acceleration and velocity components). (b) Find the force exerted on the block by the inclined track at point B. (c) Find the speed of the block at point B. (d) What is the maximum height that the block can reach after leaving the track? (e) Find the distance between point A and the point that the block land on ground level?
A 0.291-kg volleyball approaches a player horizontally with a speed of 12.2 m/s. What impulse is delivered to the ball by the player
q1. after falling from rest from a height of 35 m a 0.58-kg ball rebounds upward reaching the height of 26 m. if the
An automotive junkyard crushes old vehicles into cubes 0.44 m on a side. Assume that these cubes are made of iron. Find the resistance you would expect to encounter
A 36.0 kg child swings in a swing supported by two chains, each 2.90 m long, find the child's speed at the lowest point
A64-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. How fast is the astronaut moving after he throws the mallet
A steel wire 2.00m long with circular cross section must stretch no more than 0.260cm, What minimum diameter must this wire have
question consider the interaction between an electron and a proton separated by some distance r. compare the
A spherical mirror is polished on both sides. when you use aconvex mirror the magnification is +1/6. What is the magnification when used as a concave mirror the object remaining the same distance form the mirror?
a system of 1435 particles, each of which is either an electron or a proton , has a net charge of -7.216x10^-17, how many electrons are in this sytem
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
A 4.7 e2 kg hot-air balloon takes off from rest at surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 multiplied by 104J of work on the balloon in the process. At what height above the surface of the ea..
A man leaps from the top of a 60 meter tall building. If his initial speed is 24 m/s and at an angle of 23 degrees above the horizontal, then with what speed does he hit the ground as he lands
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