A woman weighing 600 N steps on a bathroom scale that contains a stiff
spring. In equilibrium, the spring is compressed 1.0 cm under her weight.
Find the force constant of the spring and the total work done on it during
the compression.
other
Jason riding on the sled. The total mass of Jason and the sled is 26 kg. The
cord makes a 20.0o angle with the ground. As a simplified model, assume that
the force of friction on the sled is determined by , even though the surfaces
are not dry. Find (a) the work done by Emy and (b) the work done by the
ground on the sled while the sled moves 120 m along the path at a constant 3
km/h. (c) What is the total work done on the sled?