Tyres of vehicles are deflated in deserts in order to :
Increase pressure
Increase force
Decrease force
Decrease pressure
Find the area of the school bag strap in contact with your shoulders if the weight of the bag is 100N and pressure exerted by the bag on your shoulders is 10000 Pa?
10 m2
0.1 m2
0.01 m2
0.001 m2
Straps of school bags are made broad to :
Reduce force
Reduce pressure
A girl playing basket ball is an example of :
Muscular force
Frictional force
Magnetic force
Electrostatic force
Friction can be increased by :
Applying oils
Polishing
Using wheels
Increasing roughness of the surface
What is the pressure exerted by a person of weight 550 N on the snow. If the total ski surface area is 0.5 m2 ?
1100 Pa
1000 Pa
2750 Pa
275 Pa
A ball falling downwards due to :
Gravitational force
Friction can be reduced by :
Using gloves
Increasing roughness
Avoid lubricants
Force has both magnitude as well as :
Speed
Direction
Accelaration
Velocity
Find the area of a surface, if a force of 250 N exerts a pressure of 100 Pa on it ?
25 m2
0.25m2
0.025m2
2.5m2
