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Reducing friction with pencils
Place round pencils under a heavy box. Join a string to the box and find the force required to move it across a table. Search the force needed to move the box without the rollers. Summarize the data get and suggest explanations for the results.
friction with pencils
Newton's Law of Gravitation In 1687, Newton did not "discover" gravity but he did figure out that gravity is universal. It makes a ball fall when you drop it on earth. It also
Q. Cue Ball Slip Problems? A cue ball is struck beside a line through its centre and parallel to the table. It moves forward primarily with zero angular rotation, sliding acros
Light from a monochromatic source of wavelength 4000A 0 is incident on a grating having 5000 rulings / cm. The spectrum is focused on a screen by a lens of focal length
Illustrate the formation of stationary waves in stretched strings and thus deduce the laws of transverse waves in stretched string.
What is the effect of torque and equilibrium on taps,doors,handlebars and bicycles?
Aluminium Atomic number 13 Symbol Al Atomic weight 26.98154 Discovery W
Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise wit
It is found that when a liquid is free from the external forces, it always gets the shape of a spherical drop. It is due to, for a needed mass, a sphere has the least field area. I
A block is considered on a rough horizontal surface. If we give a variable force F on the block and if we enhance the force F continuously then we seem that block remains stationar
A rock is thrown upward with a speed of 26 m/s. How long after it is thrown will the rock have a velocity of 48 m/s toward the ground?
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