Find tan^52°+sin^9°=……
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Find tan^52°+sin^9°=……These are Maths notes. Write these notes in very good handwriting on your Fair Notebook.A fixed pulley is driven by a 100 kg mass falling at
a rate of 8.0 m in 4.0 s. It lifts a load of 75.0 kgf.
Calculate :
(a) the power input to the pulley taking the force of
gravity on 1 kg as 10 N.
(b) the efficiency of the pulley, and
(c) the height to which the load is10. A block and tackle system has the velocity ratio 3.
Draw a labelled diagram of the system indicating the
points of application and the directions of load L and
effort E. A man can exert a pull of 200 kgf. (a) What
is the maximum load he can raise with this pulley
system if its efficiency is 60% ? (b) If the effort end
moves a distance 60 cm, what distance does the load
move ?A pulley system can lift a load of 1200 N by an effort of 250 N. If the resistance due to
weight of movable parts and friction is 300 N. Calculate: (a) Mechanical advantage, (b)
Velocity ratio, (c) Total number of pulleys in the system, (d) Efficiency of the systemwhy are the writs provided by constitution are very importantprove the Newton's first law from the concept of second law by correct statement
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