In both cases shown above, a block of mass M is set on a rough table. The block is connected to a string that passes over an ideal pulley. In Case 1, the free end of the string is connected to a hanging object of mass m = 10 kg. In Case 2, the hanging object is removed and a person grabs the free end of the string and pulls with a constant force equal to 98 N, the weight of the hanging object in Case 1. In both cases, the block is released from rest the same distance from the right edge of the table.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.