1. If the net torque about some point is zero, must it be zero about any other point? Explain.

2. Sit in a chair with your back straight. Now try to stand up without leaning forward. Explain why you cannot do it.

3. The cable in Figure must remain attached to the wall 8 m above the hinge, but its length can vary so that it can be connected to the beam at various distances x from the wall. How far from the wall should it be attached so that the force on the hinge has no verticalcomponent?

Transcribed Image Text:

8 m 6 m -10 m- 400 kg