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A model elevator
A working model of an elevator can simply be made from easy materials. For the rotating drums or sheaves, metal coffee tin will do. With a hammer and a big nail punch holes in the exact centre of the bottoms and lids. Change the lids and mount the tins on opposite ends of a board, taking care that they both turn simply.
model elevator
People believe that seatbelts are a MUST. But they think that they could increase the risk of other road users. Explain why it would be difficult to gather evidence for this idea..
Suppose the sides of a closed polygam represent vector arrangend head to tail rule , what is sum of these vectors ?
A simple tripod A useful tripod can be made by cutting away the sides of a tin can. It is suitable to make two or three of these to suit dissimilar burners and for use as stand
A lever of the second class Use a uniform wooden bar about 1 m long, 4 cm wide and 5 mm thick. Drill a hole near single end, in the centre of the width dimension. Also drill a
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
state and explain pauli''s exclusion principle
Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wi
Given the following image, 1 2 1 1 2 0 0 1 5 1 0 1
When two objects A and B are in thermal equilibrium with a third object (C) independently, then they (i.e. A and B) are in thermal equilibrium equally i.e. Therefore, the t
How comes the word physics?
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