Advertisements
Advertisements
प्रश्न
Give two examples to verify that a force tends to change the static condition of a body.
Advertisements
उत्तर
Force can change the static condition of a body.
- A rest rubber ball begins to move when a force applied to it.
- The player applies a force on the stationary football while taking a penalty kick in a football match. The force applied by the player makes the football move towards the goal.
APPEARS IN
संबंधित प्रश्न
A ball is hanging by a thread from the ceiling of the roof. Draw a neat labelled diagram showing the forces acting on the ball and the string
Give one example in the given cases:-
A force changes the size of a body
Newton's second law of motion applicable in all condition is:
(a) `F = (Δp)/(Δt)`
(b) F = ma
(c) `F = M (Δv)/(Δt)`
(d) all three
Two bodies have masses in the ratio 3 : 4 when a force is applied on the first body. it moves with an acceleration of 6 ms-2 . How much acceleration will the same force produce in the other body?
A force od 10 kgf is applied on a body of mass 100 g initially at rest for 0.1 s calculate:
a) the momentum acquired by the body
b) the distance travelled by the body in 0.1s. Take g = 10 N kg-1
Define an Inclined plane.
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?
Fill in the empty spaces
Can you give example for contact and non-contact forces?
In ‘tug of war’ when two teams pull equally hard, then what happens?
The moon attracts Earth with a force of 1020 N, and then the force with which the Earth attracts the moon is ______.
