Advertisements
Advertisements
Question
Figure shows a man with a parachute. Name the force which is responsible for his downward motion. Will he come down with the same speed without the parachute?
Solution
The name of force responsible for the downward motion of the parachute is force of gravity.
No, because the air friction will become less.
APPEARS IN
RELATED QUESTIONS
A spring is compressed against a rigid wall. Draw a neat and labeled diagram showing the forces acting on the spring.
Give one example in each of the following cases where a force:
(i) Stops a moving body.
(ii) Moves a stationary body.
(iii) Changes the size of a body.
(iv) Changes the shape of a body.
Is force needed to keep a moving body in motion?
Name the S.I. unit of force and define it .
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.
Explain the following:
Why is it dangerous to jump out of a moving vehicle? How can the danger be minimised?
Rocket works on the principle of conservation of
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 gravity act on dust particles?
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?
