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Give the magnitude and direction of the net force acting on (
Physics Part-I
Physics Part-I

Class 11

NCERT

Publisher:
NCERT
Subject:
Physics
1

Chapter 1: Physical World

16 questions

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2

Chapter 2: Units and Measurements

51 questions

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3

Chapter 3: Motion in Straight Line

50 questions

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4

Chapter 4: Motion in a Plane

43 questions

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5

Chapter 5: Laws of motion

52 questions

Q1
Give the magnitude and direction of the net force acting on
(a) A drop of rain falling down with a constant speed.
(b) A cork of mass floating on water.
(c) A kite skillfully held stationary in the sky.
(d) A car moving with a constant velocity of on a rough road.
(e) A high-speed electron in space far from all material objects, and free of electric and magnetic fields.
Q2
A pebble of mass is thrown vertically upwards. Give the direction and magnitude of the net force on the pebble,
(a) during its upward motion,
(b) during its downward motion,
(c) at the highest point where it is momentarily at rest. Do your answers change if the pebble was thrown at an angle of with the horizontal direction? 
Ignore air resistance.
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6

Chapter 6: Work, Energy and Power

41 questions

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7

Chapter 7: System of Particles and Rotational Motion

45 questions

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8

Chapter 8: Gravitation

33 questions

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Question
Easy
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Solving time: 1 mins

Give the magnitude and direction of the net force acting on
(a) A drop of rain falling down with a constant speed.
(b) A cork of mass floating on water.
(c) A kite skillfully held stationary in the sky.
(d) A car moving with a constant velocity of on a rough road.
(e) A high-speed electron in space far from all material objects, and free of electric and magnetic fields.

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Updated on: Sep 16, 2022

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Physics Part-I (NCERT)

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Give the magnitude and direction of the net force acting on
(a) A drop of rain falling down with a constant speed.
(b) A cork of mass floating on water.
(c) A kite skillfully held stationary in the sky.
(d) A car moving with a constant velocity of on a rough road.
(e) A high-speed electron in space far from all material objects, and free of electric and magnetic fields.
5 mins ago
Discuss this question LIVE
5 mins ago

Text SolutionText solutionverified iconVerified

(a) As the raindrop is falling with a constant speed, its acceleration, . Hence net force .

(b) As the cork is floating on water, its weight is balanced by the upthrust due to water. Therefore, the net force on the cork is 0.

(c) As the kite is held stationary, in accordance with the first law of motion, the net force on the kite is 0.

(d) Force is being applied to overcome the force of friction. But as the velocity of the car is constant, its acceleration, . Hence net force on the car .

(e) As the high-speed electron in space is far away from all gravitating objects and free of electric and magnetic fields, the net force on the electron is 0.
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Give the magnitude and direction of the net force acting on
(a) A drop of rain falling down with a constant speed.
(b) A cork of mass floating on water.
(c) A kite skillfully held stationary in the sky.
(d) A car moving with a constant velocity of on a rough road.
(e) A high-speed electron in space far from all material objects, and free of electric and magnetic fields.
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A pebble of mass is thrown vertically upwards. Give the direction and magnitude of the net force on the pebble,
(a) during its upward motion,
(b) during its downward motion,
(c) at the highest point where it is momentarily at rest. Do your answers change if the pebble was thrown at an angle of with the horizontal direction? 
Ignore air resistance.
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Question Text
Give the magnitude and direction of the net force acting on
(a) A drop of rain falling down with a constant speed.
(b) A cork of mass floating on water.
(c) A kite skillfully held stationary in the sky.
(d) A car moving with a constant velocity of on a rough road.
(e) A high-speed electron in space far from all material objects, and free of electric and magnetic fields.
Updated OnSep 16, 2022
TopicLaws of motion
SubjectPhysics
ClassClass 11
Answer TypeText solution:1 Video solution: 7
Upvotes673
Avg. Video Duration9 min