Advertisements
Advertisements
प्रश्न
Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?
उत्तर
The magnitude of forces will be equal and it acts in opposite direction, so that they are cancelling each other. We can understand this by using the following diagram :
APPEARS IN
संबंधित प्रश्न
Give one example in each case where :
The force is of contact, and
Force is at a distance
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?
The non - contact force is :
Name the physical quantity that causes motion in a body.
A ball moving on a table top eventually stops. Explain the reason .
'More the mass, the more difficult it is to move the body from rest'. Explain this statement by giving an example.
A car initially at rest, picks up a velocity of 72 kmh−1 in 20 seconds. If the mass of the car is 1000 kg, find
- Force developed by its engine
- Distance covered by the car.
State four effects which a force can bring about. Give two examples in each case.
Explain the following:
Why do we jerk wet clothes before spreading them on a line?
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?
