Advertisements
Advertisements
Question
Give one example in each case where :
The force is of contact, and
Force is at a distance
Solution
- Force exerted on two bodies during collision.
- Magnetic force between magnetic poles.
APPEARS IN
RELATED QUESTIONS
Make a match
A group | B group |
1. Fluid | a. Higher pressure |
2. Blunt knife | b. Atmospheric pressure |
3. sharp needle | c. Specific gravity |
4. Relative density | d. Lower pressure |
5. Hecto pascal | e. Same pressure in all directions |
Explain giving two examples of following :
Non - contact forces
Classify the following amongst contact and non - contact forces:
Frictional force
Normal reaction force
Force of tension in a string
Gravitational force
Electrostatic force
Magnetic force
State the effects of a force applied on
- A non-rigid, and
- A rigid body.
How does the effect of the force differ in the two cases?
A ball is moving on a perfectly smooth horizontal surface. If no force is applied on it, then will its speed decrease, increase or remain unchanged?
Two equal and opposite forces act on a moving object. How is its motion affected? Give reason.
A golfer hits a ball at rest, such that the contact between the ball and golf stick is for 0.1 s. If the golf ball covers a linear distance of 400 m in 2 s, find the magnitude of force applied. Mass of golf ball is 50 g.
In the circuit shown in figure, when the key is closed, the compass needle placed in the match box deflects. Name the force which cases this deflection.
Does the force of gravitation exist between two astronauts in space?
A man is pushing a cart down a slope. Suddenly the cart starts moving faster and he wants to sloyy it down. What should he do?