Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
the acceleration of a falling ballthe change in speed per second of a moving body is called the acceleration when it is constant as in the case of a
study of a rolling balla large ball bearing or bagatelle ball rolling down a smooth track can be timed by a pendulum to make the track fasten
a simple pendulumtie a cord at least 2 m long to some object like a stone or a small metal ball suspend this in a doorway or from a hook in the
falling bodiesif you can search a building that is about 20 m high in your locality you can examine how gravity makes bodies fall faster the longer
finding the centre of gravity of objectssecure a triangular file and place it on a table as a balancing point any sharp-edged device with a hat side
a balance trickget a smooth metre stick and let it rest lightly on your two forefingers place your fingers near the ends of the stick and then move
ball bearings place some marbles in the lid of a tin on the floor put single foot on the marbles and notice how simply you can spin
real ball bearingsstudy real ball bearings and roller bearings make a list of devices that having ball bearings or roller
reducing friction with ball bearings find two tin cans that have a deep groove approximately the top such as paint cans lay marbles in single
friction of rough surfacesplace two pieces of sandpaper together notice the friction that is formed when one is rubbed against the other now put some
places where friction occurslocate the places on several mechanical devices where parts rub together roller skates pulleys and the wheels of toys
sliding frictionlock the rollers of a roller skate by criss-crossing rubber bands more than them on both sides place the roller skate on a sloping
using a wheel and axleuse the pencil sharpener that you used in experiment a 8 pull on the end of the string that held the books and observe how
using a pulleyuse the pulley set-up shown in experiment a 12 apply the force on the movable pulley and get how rapidly the weight on the other end of
using a leverdetermine that the longer end of a lever travels farther and faster than the shorter end when the fulcrum is not in the centre a
an egg beater study an egg beater hand drill or some other device in which an enhance of speed is obtained by means of
using a bicycleturn a bicycle upside down so that it rests on the seat and handlebars turn the pedal wheel precisely one turn and note the number of
the wedge make a wedge from a piece of wood and drive it inside a table leg or some other heavy object view that the wedge is a double inclined
a see-saw leverget a thick plank about 3 m long and bring it into the class room balance it over a box or some other suitable device and let the
making spheres with surface tensionsearch a glass jar and fill it about two-thirds full of commercial alcohol with a medicine dropper place some
the maximum and minimum magnitude of the resultant of two forces are 16 n and 4nmeasure t he magnitude of individual forcelet the two vector be a and
ca has atomic no 20 and atomic weight 40 which of the following statements is not correct about ca atom1the number of electrons is same as the number
three charges are arranged on the vertices of an equilateral triangle find the dipole moment of the combination take any of two charges and search
na ion is isoelectronic with1 li 2 mg2
in the nucleus of20 ca40 there are1 40 protons and 20 electrons2 20 protons and 40 electrons 3 20 protons and 20 neutrons4 20 protons and 40