A pendulum is oscillating with its length 120 cm on Earth. (a) Find out its time period. (b) If pendulum is taken to Mars (g = 3.7 m/s^2), what would be its time period? 

10. Ellie is pushing a rolling bag at 40 ^o with a force of 350 N and able to displace her bag by 2800 mm, how much work done she has done on her bag? 

11. Lisa is trying to tighten a screw with a wrench and applied a force of 120 N at 8 cm away from its pivot point, at an angle of 30 ^o, how much torque has she applied?