3. An 0.5 kg rock is swung at the end of a 0.3m long string in a vertical circle at a rate of 30rad/s. What is the tensi
Posted: Wed Jul 06, 2022 11:36 am
3. An 0.5 kg rock is swung at the end of a 0.3m long string in a vertical circle at a rate of 30rad/s. What is the tension in the string at the top and bottom of the circle? 4. A 10kg piece of lumber that is 3m long leans against the wall at an 80degree angle with the floor. What are the horizontal and vertical forces exerted by the floor, and the horizontal force exerted by wall on the board?