10 Class Physics Notes

10 Class Physics Notes

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10 Class Physics Notes, Numerical and Past Papers, we provide complete and comprehensive notes for physics, chemistry, biology and statistics.

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Physics Notes 10 Class
Numericals:
Kinematics

Kinematics 1: Question 1 (3.1) Find the time taken by sunlight to reach the ground if the distance between the sun and the earth is 1.5×10^8 km and the velocity of light is 3×10^8 m/s.  Physix X Kinematics 1

Kinematics 2: Question 2 (3.2) A person hears the echo of his own sound from a distant hill after 2 secs. How far away is the person from the hill, if the speed of sound is 330 m/s.  Physics X Kinematics 2

Kinematics 3: Question 3 (3.3) A car is moving with a velocity of 36 km/hr is brought to rest in 5 seconds; calculate it deceleration. Physics X Kinematics 3

Kinematics 4: Question 4 (3.4) Find the acceleration of a body whose velocity increases from 11 m/s to 33 m/s in 10 seconds. Physics X Kinematics 4

Kinematics 5: Question 5 (3.5) A body starting from rest acquires a velocity of 10 m/s in 5 seconds. Calculate (a) the acceleration (b) the distance covered by the body in 5 seconds. Physics X Kinematics 5

Kinematics 6: Question 6 (3.6) A car starts from rest and after 20 seconds its velocity becomes 108 km/hr. Find the acceleration of the car. Physics X Kinematics 6

Kinematics 7: Question 7 (3.7) The velocity of a motor cycle increases by an acceleration of 2 m/sec^2 and becomes 20 m/s in 5 seconds. Find the initial velocity of the car. Physics X Kinematics 7

Kinematics 8: Question 8 (3.8) A bus is moving with a velocity of 72 km/hr on the application of breaks it stops after covering a distance of 500 m. Calculate the deceleration produced by the brakes. Physics X Kinematics 8

Kinematics 9: Question 9 (3.9) A car starting from rest attains a velocity of 20 m/s in 5 seconds. Find the distance covered by the car. Physics X Kinematics 9

Kinematics 10: Question 10 (3.10) A stone is dropped from the top of a tower takes 5 seconds to reach the ground. Calculate the height of the tower. ( take g=10 m/s^2) Physics X Kinematics 10

Kinematics 11: Question 11 (3.11) A boy throws up a ball with a velocity of 20 m/s. Find the time elapsed between the throwing and catching the ball. Physics X Kinematics 11

Kinematics 12: Question 12 (3.12) A stone is thrown vertically upwards with a velocity of 20 m/s. Find the maximum height reached by the stone and the total time of flight. Physics X Kinematics 12

Kinematics 13: Question 13 (3.13) A stone is dropped from a height of 40 m. (a) How much time will it take to reach the ground? (b) with what velocity will it strike the ground? Physics X Kinematics 13

Motion and Forces

Motion & Force 1: Question 1 (4.1) Determine the acceleration of a car of mass 900 kg. when a net force of 2700 N acts on it. Physics X Motion n force 1

Motion & Force 2: Question 2 (4.2) A car of mass 1000 kg travelling at 72 km/hr is uniformly brought to rest over a distance of 40 m. Find (a) the average acceleration (b) the average breaking force. Physics X Motion n force 2

Motion & Force 3: Question 3 (4.3)  A bullet of mass 50 g travelling with a speed of 15 m/s penetrates into a bag of sand and is uniformly brought to rest in 0.05 seconds. Find (a) How far the bullet with penetrates into the bag of sand? (b) the average force exerted by the sand? Physics X Motion n force 3

Motion & Force 4: Question 4 (4.4)  A force of 120 N acts on a stationary body for 4 seconds and the body acquires a velocity of 36 m/s. calculate the mass of the body. Physics X Motion n force 4

Motion & Force 5: Question 5 (4.5) A rectangular metal block of mass 4 kg rests on the top of a metal surface. The co-efficient of friction between the box and the metal surface is 0.2. What force parallel to the surface is needed to move the block. Physics X Motion n force 5

Vectors

5.5. Find X and Y components of the following forces? Link

5.6. Determine completely the resultant displacement vectors in each of the following cases.

  1. X-Comp 5 Km, Y-Comp 3 Km
  2. X-Comp 7.5 Km, Y-Comp 18 Km
  3. X-Comp 5.3 Km, Y-Comp 43.8 Km Link

 

Equilibrium

6.1. A force of 25 N acts on a body. If moment arm is 2 m. Find the value of torque. Link

6.2. A force is applied perpendicularly on a door, 4 meters wide which requires a torque of 120 N-m to open it. What will be minimum force required? Link

6.3. What is the moment of the couple of 10 N acting at the extremities of a rod 5 m long, as shown in figure. How can this couple be balanced? Link

Gravitational and Circular Motion

7.1. At what speed must an object travel in a circle of radius 2 m to experience a centripetal acceleration of 9.8 m/s^2 ? Link

7.2. A car goes round  a curve at 20 m/s. The radius of curvature is 50 m. Calculate the centripetal acceleration of the car? Link

7.3. A proton of mass 1.67 x 10^-27 kg is moving in a circle of radius 100 cm. An electro-magnet applies a force of 1 x 10^-12 N directed towards the center of the circle. What is the velocity of the proton? Link

7.4. A string 2 m long is used to whirl a 200 gm stone in horizontal circle at a speed of 2 ms^-1. Find tension in string? Link

7.5. Complete the gravitational force of attraction between two boys of masses 50 Kg and 40 Kg respectively apart from each other radius √2 m. Link

7.6. Compute the force of gravitational between the small and large spheres of Cavendish balance if m = 1 gm and M = 300 gm and r = 5 cm. Link

7.7. Two balls of 40 kg and 20 kg masses attract each other with a force of 3.33 x 10^-7 N. Find the distance between the masses if the value of G=6.67 x 10^-11 Nm^2kg^-1. Link

7.8. The distance from the Earth to Sun is  1.49 x 10^11 m. The mass of Earth is 6 x 10^24 kg and mass of Sun is 2 x 10^30 kg. Compute the gravitational force between them. Link

Work Power and Energy

8.1. How much work is done to displace horizontally a body 40 m by a force of 200 N, whose angle with the horizontally is 30° ? Link

8.2. What is the power of an engine that pulls a 1000 kg automobile at a steady speed of 10 ms^-1 along a level road? Link

8.3. With what constant velocity can a 1960 watt motors raise a mass of 100 kg? Link

8.4. A boy of mass 50 kg on motor bike is moving with 20 ms^-1. What is his K.E. ? Link

8.5. What is the P.E. stored by a car of weight 2000 N. When lifted 50 m straight up? Link

8.6. A box is pushed 5 m across a level surface by a horizontal force of 200 N. How much work is done on the box? Link

8.7. What is the K.E. of 2000 kg car travelling at 90 km.h^-1? Link

8.8. An object weighing 10 N falls through a distance of 10 m. What is its velocity just before it strikes the ground. Assume there is no friction? Link

Simple Machine

9.1. An effort of 160 N, applied to a pulley system is able to lift a load of 750 N through a vertical height pf 1.2 m. To do this the effort moves a distance of 7.2 m. Calculate (a) M.A of pulley (b) the efficiency. Link

9.2. The ratio between the length of the arms of a lever is 4:1.  How much force be applied to the longer arm so that a load of 20 N suspended at the shorter arm can be balanced. Link

9.3. An object of mass 100 kg is raised to 2 m above the ground using an inclined plane of length 10 m. Calculate the effort applied parallel to the inclined plane. Link

9.4. An effort of 100 N, applied to a pulley system, is able to lift a load of 400 N through a vertical height of 1 m. to do this, the effort moves a distance of 8 m. Calculate (a) M.A. of pulley (b) the efficiency? Link

9.5. A load of 21000 N placed on the top of a screw jack is lifted by a force of 300 N. If the length of the Tommy bar is 35 cm and the pitch of the screw is 2.5 m, find its M.A, and efficiency? Link

9.10. The length of the handle of a screw jack is 40 cm and its pitch is 4 mm. How much load can be lifted by applying a force of 5 N on the handle? Link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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