Question

1. How can you define the term Force? Mention it's MKS
units and also any effect,
2. What is magnetic field? Draw a neat sketch for the
magnetic field around the bar magnet?
3. Write any four differences between contact and field
4. Calculate the value of net force acting on given body?
5N acting towards right &15N force acting towards left
on the brick.(draw Free Body Diagram)
?
of force?
a
forces?​

Answer 1

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1.Force is a push or a pull that changes or tends to change the state of rest or uniform motion of an object or changes the direction or shape of an object. It causes objects to accelerate. SI unit is Newton.

2.A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetized materials. A charge that is moving in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

3.A contact force exists when two objects ate in contact with each other. It is a direct force and require a contact. A field force is a force which does not require direct contact between the bodies. In this case, the objects interact without touching each other.

4.If N is the number of forces acting on a body, the net force formula is given by,

FNet = F1 + F2 + F3 + FN.

FNet = Fa + Fg.

FNet = Fa + Fg + Ff + FN.