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प्रश्न
Gravitational force is a ______ force.
उत्तर
Gravitational force is a non-contack force.
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संबंधित प्रश्न
A charged body ______ an uncharged body towards it.
Give one example in each case where :
The force is of contact, and
Force is at a distance
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.
A cricket player holds a cricket ball of mass 100 g by moving his hands backward by 0.75 m. If the initial velocity of the ball is 108 kmh−1, find the retarding force applied by the player.
A car of mass 1000 kg develops a force of 500 N over a distance of 49 m. If initially, the car is at rest find
- Final velocity
- time for which it accelerates.
Multiple Choice Question. Select the correct option.
A man is walking from east to west on a rough surface. The force on the man is directed:
The force which acts on an object without physical contact. ______
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.
Two thermocol balls held close to each other but move away from each other, when they are released. Name the force which might be responsible for this phenomenon. Explain.
Figure shows a car sticking to an electromagnet. Name the forces acting on the car. Which one of them is larger?
