The Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE) frame the syllabus and textbooks for the students. With various curriculum amendments and modernization of teaching methodologies, the Maharashtra state board books underwent several changes to. Maharashtra State Board Books for 12th are designed in such a way that each subject like maths, physics, chemistry, biology, etc. are explained in a language that is easy for the students to learn and understand. Download MSBSHSE 12th Std Textbooks in Marathi and English. Results 1 - 16 of 10 Last Years Solved Papers (HSC) - Science: Maharashtra Board . 12th Science Question Papers (MH Board) (Combo of 2 books viz.

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Is it necessary to write only as per the HSC text book in class 12 HSC boards science? Views · What are the topics covered in 11th and. Written according to the New Text book () published by the Maharashtra State Board of Secondary and Higher Secondary Education, Pune. STD. Find all the GHSEB 12th Commerce books in pdf format. All books are textbooks by the GHSEB (Gujarat higher secondary education board). It covers the new.

Centripetal force is mg provided by the frictional force between tyres and road. In the figure, centripetal force acting on iii. Normal reaction is balanced by the net between tyres of wheels and road. For safe turning of vehicle, Note: What is banking of road? Maximum safe speed of the vehicle Explain the necessity of banking of the without skiding is provided by road. Banking of road: The angle made by the surface of road with i. The maximum safe speed of a vehicle horizontal surface of road is called angle of on a curve road depends upon friction banking.

Friction depends on the nature of the surface and presence of oil or water on Angle of banking the road. If friction is not sufficient to provide centripetal force, the vehicle is likely to skid off the road. Perfect Physics - I Necessity of banking of the road: When a vehicle moves along horizontal with speed v on a banked road banked at curved road, necessary centripetal force is supplied by the force of friction iii.

Let F be the frictional force between between the wheels of vehicle and tyres of the vehicle and road surface. The forces acting on the vehicle are ii. Frictional force is not enough and reliable a. Weight mg acting vertically every time as it changes when road downward. Normal reaction N in upward iii. To increase the centripetal force the road direction through C. But it will cause The frictional force between tyres of wear and tear of the tyres of the wheel.

The normal reaction N can be resolved required for circular motion of vehicle. Expression for angle of banking: Significance of the terms involved: The maximum safety speed of a ix.

It also depends on the angle x.

Comparing equation vi and vii it is through which road is banked. Factors affecting angle of banking: Speed of vehicle: At this speed, the frictional force is not ii. Radius of path: There will be a little wear and tear path. Acceleration due to gravity: Define angle of banking.

Obtain an xii. What will happen for vehicle Q.

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The curved horizontal road is banked at xiii. Equation ix represents angle of banking of a banked road. Thus angle of banking is independent of mass of the vehicle. Write the necessary road surface. Define conical pendulum. Obtain an v.


The tension T acting in the string can expression for the angle made by the string be resolved into two components: Hence a.

Consider a bob of mass m tied to one v2 …. During the motion, string is inclined to This is the expression for the linear speed of the figure. The weight mg acting vertically rh downwards. The tension T acting upward g along the string. Circular Motion ii. If the period of conical pendulum is T ii.

In the displaced position P, there are two forces acting on the bob: Discuss the factors on which time period of a. The weight mg acting vertically conical pendulum depends. The tension T acting upwards along the string. Length of pendulum l: Acceleration due to gravity g: Time ….

Perfect Physics - I viii. Dividing equation ii by i , iii. Expression for tension in V.

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C motion: Let a body of mass m be tied at the end of a massless inextensible string and This is required expression for tension in the whirled in a vertical circle of radius r in string. At any point P the forces acting on it Q.

Is there any limitation on semivertical are: For a conical pendulum, a. Weight mg along vertically downward direction. For b. H of string, and a body tied to a string vH cannot be resolved in a horizontal circle TH T vM H such that the string is horizontal. What is vertical circular motion?

Show L vL mg that motion of an object revolving in vertical circle is non uniform circular motion. To complete vertical circular path, the Ans: Consider an object of mass m tied at one …. Circular Motion v.

When body is at highest position, Q. Expression for velocity in vertical circular motion: When the body is at bottom position: Velocity at highest position: Velocity at lowest position: From equation ii , iii and iv it is observed According to law of conservation of that tension is maximum at lowest position energy, and minimum at highest position. Derive an expression for the minimum.

Expression for minimum velocity at any 2 point in V. At highest point, i. P is any point on the circle From equation iii as shown in the figure. Velocity at midway position: From principle of conservation of At midway position, K. E circular motion is constant. Expression for energy at different points in 2 V. Equation iii represents total energy of i. Consider a particle of mass m revolving particle at midway position in V.

M in a vertical circle of radius r in v. From equation i , ii and iii , anticlockwise direction. When the particle is at highest point H: M is mgr, i. E vertical circular motion. M on a circle of radius r as shown vH vM in the figure. When particle is at lowest point L: By law of conservation of energy, where, P.

Motion of a particle along a circumference of From equation i and ii , we have, a circle is called circular motion. Infinitesimal small angular displacement is a analogy with linear motion vector quantity.

State the kinematical equations for circular a pseudo vector scalar , as for large values of motion in analogy with linear motion.

The kinematical equations of circular motion not valid. The rate of change of angular displacement which is given below: The rate of change of angular velocity w. There are two types of acceleration aR radial ii.

The angular displacement of a particle and aT tangential in non U. It is analogous to the kinematic equation non-U. Centripetal force is directed towards the centre 2 along the radius and makes the particle to where, move along the circle. Circular Motion 9. M angular velocity: Angular displacement: Angular acceleration: The period of revolution of the conical i. Tangential acceleration: Tension at any point P in vertical circular 7. Centripetal force: M iii.

Maximum velocity of vehicle to avoid Case 1: Maximum safe velocity on banked road: Energy of a particle at any point in vertical ii. Perfect Physics - I Conical Pendulum: Linear velocity of the bob of conical in 5 seconds? Period of conical pendulum Given: Minimum velocity at lowest point to Ans: The angular displacement of second hand in complete V.

Minimum velocity at highest point to Example 2 complete V. Minimum velocity at midway point to Solution: Tension at highest point in V. Tension at midway point in V. Tension at lowest point in V. The angular velocity of earth due to its spin r Total energy at any point in V. Example 3 5 T. If the minute hand is 5 cm long. What is Kinematic equations of linear motion: Kinematic equations of rotational motion: Which of the following force is a pseudo Centrifugal force is force?

A a real force acting along the radius. A Force acting on a falling body. B a force whose magnitude is less than B Force acting on a charged particle that of the centripetal force.

C a pseudo force acting along the radius C Force experienced by a person standing and away from the centre. D a force which keeps the body moving D Force which keeps the electrons moving along a circular path with uniform speed. A stone is tied to a string and rotated in a In uniform circular motion, the angle between horizontal circle with constant angular velocity. The centripetal force acting on a mass m C tangentially forward moving with a uniform velocity v on a circular D tangentially backward orbit of radius r will be mv 2 1 A particle performs a uniform circular motion A B mv2 in a circle of radius 10 cm.

What is its 2r 2 2 centripetal acceleration if it takes 10 seconds 1 mv A 2. When a car takes a turn on a horizontal road, A constant velocity the centripetal force is provided by the B constant acceleration A weight of the car. C constant kinetic energy B normal reaction of the road.

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D constant displacement C frictional force between the surface of Which of the following statements about the the road and the tyres of the car. D centrifugal force. A Centripetal force balances centrifugal On being churned the butter separates out of force. C cohesive force D frictional force C Centripetal force is directed opposite to centrifugal force. When a particle moves on a circular path then D Centripetal force is experienced by the the force that keeps it moving with uniform observer at the centre of the circular velocity is path described by the body.

A centripetal force. B atomic force. The linear acceleration of the particle of mass C internal force.

An unbanked curve has a radius of 60 m. The If the acceleration due to gravity is 9. Circular Motion A particle of mass m is observed from an Toys with small parts will also not be accepted.. Please click here for an updated list of requested items. Please note we cannot accept food donations containing nuts or nut products for distribution to the patients due to allergy risks. I would like to volunteer.

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