Advertisements
Advertisements
प्रश्न
Define contact forces.
Advertisements
उत्तर
The forces which are applied on a body through a connector, are called contact forces. Forces like Frictional force, Mechanical force, etc., are the forces of contact.
संबंधित प्रश्न
Give one example in the given cases:-
A force changes the size of a body
Define the term linear momentum. State its S.I unit.
Define Newton (the S.I unit of force)
How can you feel a force of 1 N?
A body of mass 50g is moving with the velocity of 10 ms-1. It is brought to rest by a resistive force of 10 N Find.
1) the retardation and
2) the distance that the body will travel after the resistive force is applied.
A uniform car of mass 500g travels with a uniform velocity of 25 ms-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s calculate
1) the retardation
2) the distance which the car travels after the brakes are applied
3) The force exerted by the brakes.
How do you define force? What are the forces acting on a man standing in a lift? If the lift moves down with an acceleration of 2 ms−2, what is the net force on the man if his mass is 50 kg?
______ has to be applied to change the ______ of a ______ object.
(moving, direction, force)
Force acting on a given area is called pressure.
Derive the unit of force using the second law of motion. A force of 5 N produces an acceleration of 8 m s–2 on a mass m1 and an acceleration of 24 m s–2 on a mass m2. What acceleration would the same force provide if both the masses are tied together?
