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A pebble of mass 0.05 kg is thrown verti...

A pebble of mass 0.05 kg is thrown vertically upwards Give the magnitude and direction of net force on the pebble (a) during its upward motion (b) during its downward motion (c) at the highest point where it is momentarily rest
Do your answers change if the pebble were thrown at an angle of say `45^(@)` horizontal direction.
Ignore air resistance.

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To solve the problem, we need to analyze the forces acting on the pebble during its upward motion, downward motion, and at the highest point. We will also consider whether the situation changes if the pebble is thrown at an angle of 45 degrees. ### Step-by-Step Solution: 1. **Identify the Forces Acting on the Pebble:** - The only force acting on the pebble is the gravitational force (weight) acting downward. - The gravitational force can be calculated using the formula: \[ ...
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NCERT ENGLISH-LAWS OF MOTION -EXERCISE
  1. Give the magnitude and direction of the net force acting on (a) a dr...

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  2. A pebble of mass 0.05 kg is thrown vertically upwards Give the magnitu...

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  3. Give the magnitude and direction of the force acting on a stone of mas...

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  4. One end of string of length l is connected to a particle on mass m and...

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  5. A constant retarding force of 50 N is applied to a body of mass 20 kg ...

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  6. A constant force acting on a body of mass 3 kg changes its speed from ...

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  7. A body of mass 5 kg is acted upon by two perpendicular forces 8 N and ...

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  8. The driver of a three wheeler moving with a speed of 36 km//h sees a c...

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  9. A rocket with a lift off mass 20000 kg is blasted upwards with a net i...

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  10. A body of mass 0.40 kg moving initially with a constant speed of 10 m...

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  11. A truck starts from rest and accelerate uniformly with 2 ms^(-2). At t...

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  12. A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m l...

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  13. A man of mass 70 kg stands on a weighing machine in a lift, which is m...

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  14. Fig. shows the position-time graph of a particle of mass 4 kg. What is...

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  15. Two bodies of masses 10 kg and 20 kg respectively kept on a smooth hor...

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  16. Two masses 8 kg and 12 kg are connected at the two ends of a light in ...

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  17. A nucleus is at rest in the laboratory frame of reference. Show that i...

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  18. Two billiard balls each of mass 0.05 kg moving in opposite directions ...

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  19. A shell of mass 200g is fired by a gun of mass 100kg. If the muzzle sp...

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  20. A batsman deflects a ball by an angle of 45^(@) without changing its i...

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