Advertisements
Advertisements
प्रश्न
A truck of mass M is moved under a force F. If the truck is then loaded with an object equal to the mass of the truck and the driving force is halved, then how does the acceleration change?
Advertisements
उत्तर
Initially, acceleration of the truck = `("Driving force")/("Mass") = "F"/"M"`
Finally acceleration of the truck
= `("F"//2)/2"M" = 1/4. "F"/"M"`
∴ The acceleration of the truck becomes
`(1/4)^"th"` of its initial value.
APPEARS IN
संबंधित प्रश्न
Give two examples of situations in which you push to change the state of motion of objects.
To draw water from a well we have to ______ at the rope.
Fill in the blank.
On pulling a string, its .................. increases.
Match the following columns
| Column A | Column B |
| a) Non contact force | 1) repel |
| b) Like poles | 2) kg |
| c) Contact force | 3) gravitational force |
| d) Mass | 4) wear and tear |
| e) Weight | 5) force of friction |
| f) Friction | 6) kgf |
Name the term used for the push or pull?
Give one example of force as a pull
What do you mean by the gravitational force? Give an example to illustrate it.
Give a reason for the following.
Brake handles of motorcycles are generally covered with a toweled cloth?
Solve the crossword puzzle.
Across
1. Type of force which depends upon the roughness of a surface
2. An effect of friction
3. The force of friction caused due to fluids
4. Type of friction acting between two bodies at rest
5. Type of friction which occurs when applied force overcomes static friction
6. A special body design to enable minimum drage Down
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
