Q1. To hoist him into the tree, a 69.00kg man ties one end of nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 372N. Avoid any friction between the rope and the branch, and determines the man's upward acceleration.
Q2. For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R?