Physics
Which feature of the screw determines its mechanical advantage?
- Thread
- Pitch
- Lead
- Interlock
Related Questions
What type of simple machine is a bottle opener?
- Wedge
- Class I lever
- Class II lever
- Wheel and axle
Which of the following is not a feature of an inclined plane?
- Length of inclined plane
- Height of inclined plane
- Threads
- Slanting surface
Match the columns.
Column A Column B 1. Fixed support in a lever (a) Door stopper 2. Children's slide (b) Screw driver 3. Fixed pulley (c) Fulcrum 4. Wheel and axle (d) Well 5. Wedge (e) Inclined plane Give reasons for the following statements.
(a) Work done by a standing man is zero.
(b) A simple machine neither provides energy nor does any work.
(c) Mechanical advantage of class II lever is always greater than 1.
(d) Effort depends on the steepness of inclined plane.
(e) Efficiency of a machine cannot be 100%.