a) Define torque. Calculate the torque produced about the pivot of a handle, when 20 N force is applied at a distance 0.25 m from the pivot.
(b) Write any two effects of force with example.
(c) Define i. One atm ii. One pascal
(d) What is barometer? Who had invented this?
(e) How does the density of a liquid affect the pressure exerted by it?
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Torque is the unit of Moment of Force.
80 N/ m
Force can change the direction of a moving body, for example, we kick a football and change its direction.
It can change the speed of a moving body. For example, we kick a football and change its speed.
ATM stands for atmospheric pressure.
1 Pascal is the SI unit of Pressure
Barometer records Atmospheric Pressure. It was invented by Blaise Pascal, and Fortin, a scientist.
The Pressure exerted by a liquid increases with the density of the liquid.
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