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प्रश्न
The force of friction always acts ______ the motion.
पर्याय
along
against
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उत्तर
The force of friction always acts against the motion.
संबंधित प्रश्न
A spring is compressed against a rigid wall. Draw a neat and labelled diagram showing the forces acting on the spring.
Give one example in the given cases:-
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Give one example in the given cases:-
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Complete the following
Newton is the unit of .................
Newton's second law of motion applicable in all condition is:
(a) `F = (Δp)/(Δt)`
(b) F = ma
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(d) all three
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A cricket ball of mass 100 g strikes the hand of a player with a velocity of 20 ms-1 and is brought to rest in 0.01 s calculate
1) the force applied by the hand of the player.
2) the acceleration of the ball
A force od 10 kgf is applied on a body of mass 100 g initially at rest for 0.1 s calculate:
a) the momentum acquired by the body
b) the distance travelled by the body in 0.1s. Take g = 10 N kg-1
The adjacent diagram shows a heavy roller, with its axle at O, which is to be raised on a pavement XY. If there is friction between the roller and pavement, show by an arrow on the diagram the point of application and the direction of force to be applied. If pivoted at O, now will it go up?
Fill in the empty spaces
Can you give example for contact and non-contact forces?
