Question

please answer for these 4 questions
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Answer 1

please drop some thanks

Answer 2

Answer:

7 . b)

8. c)

9. a)

10. d)

Explanation:

7. The forces, which meet at one point and their lines of action also lie on the same plane, are known as coplanar concurrent forces. Coplanar non-concurrent forces: The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplanar non-concurrent forces.

8. Mass of the ball is = 0.5kg

velocity = 100 ms

As, Momentum = mass x velocity

= 0.5kg x 100 m/s

= 50 kg m/s (b)

9. If the particle is moving at constant speed along a straight line path, that means the velocity is also constant. If the velocity is constant then accelration is zero. Therefore, force is also zero.

10. Correct option is D

Using cose

Static friction =µgN

= μs mgcosθ

As normal force due to inclined is mgcosθ

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