Q1. A projectile is fired at an upward angle of 45 from the top of a 227 m cliff with the speed of 160 m/s. What will be its speed while it strikes the ground below?
Q2. A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to the other. Find out the tension in string 1 at the moment that the monkey is halfway between the ends of bar.