UNIT 4 CONCEPTUAL QUESTIONS " TURNING EFFECT OF FORCE " CLASS 9 PHYSICS KPK BOARDS .
Автор: ehtisham tariq WMSC Peshawar
Загружено: 2021-06-23
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CONCEPTUAL QUESTIONS UNIT 4 "THERMAL TURNING EFFECT OF FORCE " CLASS 9 PHYSICS KPK BOARDS .
Ehtisham Tariq lecturer in Warsak Model School and College Peshawar.
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1) can the rectangular component of the record be greater than the vector itself? explain.
2) explain why door handles are not put near hinges?
3) can a small force ever exert a greater torque then a larger force ? explain.
4) why it is better to use a long spanner rather than a short one could use a rusty nut?
5) the gravitational force acting on a satellite is always directed towards the centre of the earth. does this force exerted torque on satellite?
6) can we have situations in which an object is not in equilibrium even though the net force on it is zero? give two examples
7) why do tightrope Walker carry a long narrow rod?
8) why does wearing high heeled shoes sometimes cause lower back pain?
9) why is it more difficult to lean backwards .explain?
10) can a single force applied to a body change both its translational and rotational motion? explain.
11) two forces produces the same torque. does it follow that they have the same magnitude? explain.
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