Recent content by corala

http://imageshack.us/photo/my-images/812/unledylp.png/ So, A sample of material was stretched and then allowed to contract. A stress-strain graph was obtained as the above picture. Is it true that the material is permanently deformed based on the graph? And, the gradient of the graph...

For example: i) Someone lifts 2kg flowerpot 1m vertically upward. The work done by the gravity is -19.62 J? Then, if ii) A 3kg box on the floor is lifted vertically up onto the head and then lowered down to the shoulder. The shoulder is 150cm while the top of the head is 175cm measured...

Ok. I get it now. Thanks for your help. =)

So, angular momentum = change in angular velocity x mass? Please correct me if I'm wrong. Then, if net torque is applied, an object will experience a constant angular speed or an angular acceleration ?

is there any formula of net torque? as we know, net force = momentum / time right? what about net torque?