Problem 5: A 2.0 kg block, lying on a smooth table, is connected to another 5.0 kg block by means of a weightless cord passing over, without slipping, a cylindrical pulley of 2.0
kg mass and 10.0 cm radius placed at the edge of the table. The system is released from
rest at t= 0. Consider g=9.8 m/s2.
(a) In 0.3s the 5.0 kg block will drop by
(b) The tension in the part of cord connected horizontally to the 2.0 kg block is

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600