Question

1) An example of a contact force is
a. Magnetic force
b. Frictional force
c. Gravitational force
d. All of these
2) A Force cannot change the
a. Speed of an object
b. Mass of an object
c. Shape of an object
d. The direction of a moving object
3) The pull of the earth is a force called
a. Gravitational force
b. Frictional force
c. Electrostatic forces
d. None of these

4) If a force is applied on a smaller area of contact, the pressure exerted by it is

a. Greater
b. Lesser
c. The same
d. None of these

5) Why do the pillars holding the track of Metro trains have a broader base?
6) Define Pressure. Explain why shoulder bags are provided with broad straps
and not thin strap.

plss give right answer please

Answer 1

Explanation:

1) b. Frictional Force

2) b. Mass of an object

3) a. Gravitational Force

4) a. Greater

5) The broader base allows for the pressure applied by the metro on the pillar and the pressure applied on the ground below the pillar by pillar to be reduced since pressure is indirectly proportional to the area of the object applying force.

6) Pressure is the continuous physical force exerted on or against an object by something in contact with it. Shoulder bags are provided with broad straps so as to allow the pressure exerted by the shoulder bags on our shoulders to be reduced since pressure is indirectly proportional to the area of the object applying the force.

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